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Tesla Valve | The complete physics

  • Published on Mar 20, 2023 veröffentlicht
  • Nikola Tesla had invented a very interesting one-way value. Let's understand the complete physics of this valve in this video.
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Comments • 7 922

  • Lesics
    Lesics  8 months ago +60

    I hope you enjoyed the Tesla valve video. Please be a part of our team by visiting : www.patreon.com/Lesics

    • Roland Buser
      Roland Buser Month ago

    • Scott Albers
      Scott Albers Month ago

      I would have enjoyed it if you had tried viewing it yourself & subsequently fixed the audio before posting it. As it is, it was thoroughly unenjoyable.

  • Jared Owen
    Jared Owen 2 years ago +2800

    Very cool! Thanks for sharing and great animation too

    • Fotolotek!
      Fotolotek! 2 years ago

      Yeah really good! I wait for more slow motion!

    • Siddharth Arora
      Siddharth Arora 2 years ago

      Yes i see your animated videos.. It is very intresting and i understood everything

    • taxicamel
      taxicamel 2 years ago +1

      VERY DISAPPOINTING PRESENTATION, this "Learn Engineering" guy. I watched the alternative video and didn't see or identify anything in the "demonstration". The guy tried to only "suggest" that flow was "noticeably faster and slower". This is nothing more than an observation based on what he was "HEARING". There was absolutely NOTHING measured, either flow or pressure. So what if one direction creates more noise than the other direction? ------ Well I suppose the guy has some PhD degree (or just threw on a jacket and tie) and assumes people are supposed to accept the presentation as fact. Clearly, he doesn't know how to provide a presentation that is supported with factual monitoring equipment .....BUT HE THANKS YOU FOR THE LOVE.

  • Aaron Mitton
    Aaron Mitton Year ago +1622

    When you say "let's see it work" pretty sure everyone was expecting a real life version. You can make anything happen with computer animation

    • case barreoltt
      case barreoltt Month ago

      @Lick yes, it most certainly could be demonstrated without animation.

    • guywiththebottle
      guywiththebottle Month ago +1

      @lost524 Yeah, no. I am critical of the information I am offered. Pull one over on yourself and get lost524. Maybe you should take yourself less seriously. Go reply to Aaeron Mitton's comment instead. He is the guy with 1500 likes for virtually the same opinion.

    • guywiththebottle
      guywiththebottle Month ago +2

      @lost524 I don't think anybody is demanding anything. I can throw a brick in the middle of the road, for free, and it still wouldn't be a good idea in spite of it being a free brick or service. Free is not a way to avoid a negative reaction. Now get lost524...

  • John-Del
    John-Del Year ago +877

    The interesting thing about this apparatus is that the reduced flow from the output side is fairly consistent no matter how much pressure is on the input side. It's not adjustable but this would have applications where someone would need a relatively stable volume of liquid flow regardless of the changing input pressure. I think that is the real purpose of this valve, not so much being a one way valve.

    • Man Manman
      Man Manman Month ago +1

      If only the ancients knew about this, they could have used it to make great water clocks I guess.

    • Mod jaid car care services
      Mod jaid car care services 4 months ago +1

      Good wark

    • Patrick Foster
      Patrick Foster 5 months ago

      Could even be called a pressure regulator, or accumulator?

    • tomhath8413
      tomhath8413 9 months ago

      @Thomas Taylor Won't work, because as soon as you stop flow the pressure will build up and open the valve.

    • m33tballa
      m33tballa Year ago

      Ya but it seems like its a job that a conventional valve is still capable of. The only real benefit at the end of the day is reduced wear while having a lot more drawbacks than value

  • jctroutt
    jctroutt Year ago +394

    It would be more accurate to compare this to a pressure-reducing valve, rather than a check-valve / back flow preventer.

    • jctroutt
      jctroutt Year ago +1

      @Byronn Davis perhaps I’m miss understanding your comment, but I wasn’t dissing the valve at all. Just saying it is not a true check valve. It looks like a very excellent pressure reducing valve if the application does not require precision, as it has no moving parts and pressure reduction ramps up with input pressure.
      As someone who installs check valves and back flow preventers that MUST keep ALL irrigation water out of city water lines, I take an interest in this.

  • John S
    John S Year ago +26

    Has anyone ever tried to make a firearm silencer in the shape of a tesla valve? I'm interested to know how well it would work at slowing down gasses and whether the moving projectile blocking the primary flow channels would effect it as it travels down the valve. However my instincts are telling me the gasses would just push the projectile downward in the direction of each curve and it would probably just blow up lol.

    • TesTur Energy
      TesTur Energy 5 months ago +1

      Yes there are couple patents on it actually.

  • Vatsal
    Vatsal 2 years ago +7635

    Never thought Nicola Tesla would have had anything to do with fluid mechanics

  • Claude Vi'Eaul
    Claude Vi'Eaul Year ago +284

    I'm guessing the main reason this type valve hasn't caught on is simply because, as stated, it can not complete block the reverse flow.
    For instance water without a lot of pressure behind it (from static height or a pump) will create less vortices and therefor less resistance.
    The harder you push the water through (use a big pump), the pressure loss will increase exponentially, and so in relative terms it will be more efficient. It still won't stop flow completely though. It will also mean more damage to the valve due to pit corrosion (the same you get on ships propellers), and that would severely restrict the lifespan.
    But it is certainly an ingenious design, no doubt.

    • Amazing Username
      Amazing Username 2 months ago


    • KiLLJoY
      KiLLJoY 2 months ago

      I was thinking you could use this to limit the flow and have another valve behind it. Until you realise that you could just replace the other valve if it gets broken 😂

    • Rohan Zener
      Rohan Zener 2 months ago

      That's what smooth surfaces are for.

    • TesTur Energy
      TesTur Energy 5 months ago

      Tesla valves work best for high frequency pulses. They don’t work for DC flows.

    • That one guy
      That one guy 9 months ago

      It’s just not very efficient. Valves with moving parts are much more compact and can move more fluid.

  • laernulieNlaernulieNlaernulieN

    Fluid dynamics is a very interesting and very complex field and has an impact on so many day to day things that we take for granted. Tesla was a true engineering genius.

    • laernulieNlaernulieNlaernulieN
      laernulieNlaernulieNlaernulieN 17 hours ago

      @Mike Kelly and how many things have you ever invented that are still being used (in principle at least) today?

    • Mike Kelly
      Mike Kelly 23 days ago

      @laernulieNlaernulieNlaernulieN That's a matter of motivation and circumstances.

    • laernulieNlaernulieNlaernulieN
      laernulieNlaernulieNlaernulieN 24 days ago

      @Mike Kelly I'm not saying that he was the greatest mind the world has ever known but you have to acknowledge that he was a talented guy who came up with some brilliant ideas.

    • Mike Kelly
      Mike Kelly 27 days ago

      @laernulieNlaernulieNlaernulieN In that case most of the human race is made up of geniuses. Most of us have visionary thoughts at one time or another but few of us publicise these.

  • Lo-Tar
    Lo-Tar Year ago +7

    I love it! Tesla basically created a Diode which is an electrical component on circuit boards which will only let current flow in one direction - except he created the "Fluid" version of a diode. Which is awesome. I just watched the tesla turbine video and it seems he was doing what we do today just with fluid instead of pure electricity.

    • EricLeafericson
      EricLeafericson 2 months ago

      Oh that a cool way of thinking about it! It's a water diode, that makes a lot of sense. Great comment.

    • cornman1123
      cornman1123 5 months ago +1

      Dammit you said it first

  • hamsterdoom360
    hamsterdoom360 Year ago +317

    Just when you think you know about all of Tesla's amazing accomplishments, you learn about another one.

    • El Pingas
      El Pingas Month ago

      @Igor Anisimov Oh yes, the very known professor Igor Anisimov of the Univeristy of Madeup Bullshitown.

    • Rosh Asensi
      Rosh Asensi 2 months ago

      @Choas_Lord_512 i dont understand also
      why would i want to win an argument?
      i want to solve the agrument not win it
      because it will help me and the other person understand why i or they dont agree with something

    • Rosh Asensi
      Rosh Asensi 2 months ago

      @Jack Danny hey uhh mate can u help me? idk what the frick this dude is sayin

    • Rosh Asensi
      Rosh Asensi 2 months ago

      @Choas_Lord_512 huh?

    • Choas_Lord_512
      Choas_Lord_512 2 months ago

      @Rosh Asensi you didnt "remember", you "almost forgot" which implies its been on your mind for months. Careful with your words, they could be used to beat you in yet another argument

  • Ben Ingram
    Ben Ingram Year ago +7

    Something not mentioned in this video is that alongside the mentioned flow restrictions of the Tesla valve, after the first switchback the "main" flow will be directed towards the next switchback each time. It doesn't appear to be an even split into primary and secondary.

  • Steve Langstroth
    Steve Langstroth Year ago +3232

    "Tesla's valve is dangerous, immoral, illegal and nefarious!"
    ---- Thomas Edison

    • bj haberl
      bj haberl 5 months ago +1

      *Edison then uses it to drown an elephant* SEE?!

    • redman
      redman 6 months ago


  • quandale dingle
    quandale dingle Year ago +101

    I've never been more confused in my entire life watching this video. Nikola must've been a really smart guy, I give him a round of applause for being a smart guy

    • King Greco Roman
      King Greco Roman 13 days ago

      The valve is nearly worthless. People are giving it too much credit.
      Once the valve is full of fluid (as intended) the rate and pressure of liquid leaving the valve will be unchanged compared to a pipe as it flows from either end.

    • Atomicwedgie81
      Atomicwedgie81 5 months ago

      He made fun of Einstein's Theory of Relativity, so why was Einstein put upon a pedestal, and not the true genius, Tesla...hmmm

    • Shanopla
      Shanopla Year ago

      @Grim reaper hmm “own way” or the way we gave it by design? I would say each stream is going where we told it to!

    • Grim reaper
      Grim reaper Year ago

      @Shanopla Even simpler. One way water gets in its own damn way, the other way it don't. Thus flow is restricted in one direction but not in the other.

    • Shanopla
      Shanopla Year ago

      In simple terms water will use all available space and you design the tube so that some of the water is forced through shapes designed to move it efficiently back towards the direction it initially came from.

  • ObsessedCollector
    ObsessedCollector Year ago +827

    Imagine all the great things we woulda got earlier if it wasn't for the greed of Marconi, Edison and JP Morgan. Tesla was the greatest inventor ever!

    • Mr Techie
      Mr Techie 6 months ago

      @Eric Liu if wishes were horses, beggars would ride.

    • Eric Liu
      Eric Liu Year ago +2

      @Based Man Exactly
      If there was a material that could withstand such forces then we should switch to using Tesla turbines in all thermal and nuclear power plants and steam propelled ships.

    • Based Man
      Based Man Year ago +1

      @Eric Liu no material that we know off*

    • Eric Liu
      Eric Liu Year ago +2

      The tesla turbine isn't practical for commercial use due to the fact that there is no material that can withstand more than 10,000 RPM.

    • Based Man
      Based Man Year ago +2

      @Adrian Alexandrov Are governments and huge megacorporations even separate nowadays? Money is one hell of a drug

  • Angel Man
    Angel Man Year ago +7

    As a 20 year master plumber I love the design due to it not having any mechanical parts that could fail for a pressure reducing valve this would be great

  • Robert Giroux
    Robert Giroux Year ago +187

    When you look at his achievements inventions and abilities, stacked against any other man throughout the entirety of humanity, that we know of, Nikolai Tesla is by far the number one greatest mine.

    • Supernatural Forces
      Supernatural Forces Year ago

      Btw, i can't reply to you much coz if i quote The,is,t Scient,is,ts, talk about zi,on,is,ts, ban,king sy,stem, its col,lapse, es,chat,ology, Islam, etc. then my com,men,ts get auto,matic,ally de,let,ed after 1 mi,nut,e .

    • Supernatural Forces
      Supernatural Forces Year ago

      Yup! I was just reminding you about other Successful people and about the definition of Success. I know everyone doesn't believe in a religion. The mainstream Scientists who reject the Creator, the Designer/ Fashioner, the Causer of the Big Bang, the Maker of Order/Law, the Originator of the First Molecule/Atom, the encoder of instructions in a DNA, are encouraged/allowed to blabber on a Television/Show/Event.
      "There's no Anthro,polo,gist/Biologist on this Plan,et who can explain how a Sun,flower 🌻 evolve a bunch of spirals in it and De,sign its seedpod"
      - A Doct,or,ate/Scientist (Non - Mainstream). [See my playlist 'Rational Believer's' last clip.]

    • Techytech
      Techytech Year ago

      ​@Supernatural Forces What a bizarre response. You do realise not everyone believes in a religion and so the figures you list are fictional in their eyes.
      The discussion on this thread is about people where there is a consensus that they existed.
      Your a strange one!

    • Igor Anisimov
      Igor Anisimov Year ago +1

      @Godzilla Tesla was never a scientist, at most he was amateur engineer. Besides there was an episode, when he called theory of relativity a crazy idea. So much for his "brilliant mind". He also criticized many other contemporary ideas in science.

  • Fruz
    Fruz 5 months ago

    It would have been nice if you had explained that in the converging and diverging designs, both had points where pressure increases, and where pressure decreases.
    One design does not have pressure always increasing everywhere and the other pressure decreasing everywhere, the "outside" of the arrow always has the opposite effect on the flow than the inside.
    I guess the location of the vortexes is where it really differs ? (A vortex in the middle will have a larger impact that vortexes on the sides ?)

    • Observ45er
      Observ45er 4 months ago +1

      Good catch. The initial conceptual analysis is flawed, though the actual Tesla valve does work as described. The simplified "diverging flow" has converging flows against the outer wall and visda versa.

  • Lesics
    Lesics  2 years ago +1364

    clip-share.net/video/ozFBsMyyDSE/video.html - Here is a simple experimental demonstration of the Tesla valve. Some people have casted doubt about its effectiveness. Trying to understand the Tesla valve and Nikola Tesla's mind was a real fun. Thank you for the love :)

    • Mike Goodolds
      Mike Goodolds 9 months ago

      Is Tesla valve in use anywhere today ?

    • FPV Angel
      FPV Angel Year ago

      This is omitting the electrical applications the design is really intended for.

      TRIANGLE FRUIT Year ago

      Tesla is my hero! I try to be as good inventor as he was in his time. 🙂❣️

    • Kaan ERSAL
      Kaan ERSAL Year ago


  • Kevin
    Kevin Year ago +58

    One additional perspective: Tesla thought in oscillations and capacity - As demonstrated in his work on alternating current. While this valve works for steady-stream applications (like constant pressure water flow), it is intended for oscillating flow (like in the pulsejet engine).

    • Kevin
      Kevin 27 days ago

      @JJ That is super interesting! I have thought about this issue for some time and I thought that - to be used for a pulse jet - it would probably either need an unrealistically high frequency of firing - and subsequent high-velocity airflow to create the necessary compression - or a higher viscosity medium which both seem unreasonable. While I think, in principle, something like a pulsejet could be an appropriate application of this valve, I assume it will demonstrate its value mainly in electrostatic propulsion systems in the future.

    • JJ
      JJ 28 days ago

      These don't work for pulse-jet engines, in spite of the countless patents that have been issued, nobody has actually made it work, and in fact it cannot work.
      The closest anyone has gotten to a one-way aerodynamic valve was Gluhareff and it operated as a tuned resonator, that is similar physics to exhaust header primary length tuning for maximum cylinder intake pressures. Using the reflected negative sound wave to create a suction at the appropriate time. Works a treat. But Gluhareff lied, okay "marketed" in the 1970s definition of the word, his design to only burn 0.75 lb/hr/lbf thrust when in fact it was over 4.0lb/lbf/hr. Think about it, a sound wave reflection pulling in outside air cannot create enough compression to obtain fuel efficiency like that of a many-stage Turbojet. A ramjet needs nearly mach-3 inlet airflow to obtain its peak efficiency of 1.8lb/lbf/hr (2000 seconds Isp) and it gets around 4lb/lbf/hr at mach 0.6-1.0 similar to the Gluhareff did in reality. He was also brilliant in the sense he made a ramjet/pulsejet without moving parts that generated large static thrust.
      And he claimed it was fully Throttleable from idle to max, but in reality is could only throttle down to 50% thrust else it would cease to resonate and snuff out due to lack of inlet airflow. Its an impractical novelty and he was a marketer of the same vein as Jim Bede or any other Hero of Popular Mechanics Magazine.

    • Kevin
      Kevin 4 months ago

      @kai Takanashi Yes, of course! In this video, the valve was tested in a static environment, assuming a continuous flow of liquid / gas in one direction. When reading up on Tesla's Work, one thing that stood out to me was how often he emphasized oscillations / vibrations as key to his work. He even once stated something like (roughly) 'If you want to uncover the secrets of the universe, you have to think in oscillation, frequency and capacity' - As perfectly illustrated in his work on alternating currents. Applying this to the tesla-valve in this video: Although it does work for constant-flow applications, it (following Tesla's thinking) would excel in applications where flow constantly changes back and forth through the valve. Of course, it would have to be tuned to precisely fit the volume (capacity) of liquid / gas passing through each 'beat' and its frequency, as usual. One application where exactly such a back and forth is required is the design of pulsejet-engines. Here, you need a valve that does exactly this: Let air through in one direction and block it the other direction - And do this very quickly and with a high frequency. The tesla valve - having no moving parts by design - would be perfectly suited for this. I remember that there even is a video of somebody trying to build a pulsejet with a tesla valve, yet from what I can tell, their design was not sufficiently well tuned to work.

    • kai Takanashi
      kai Takanashi 4 months ago

      Oscillating flow of pulsejet engine? Can u explain it in simple words?

  • Keith Perdue
    Keith Perdue Year ago +104

    I enjoy watching this every so often & it always blows me away how Tesla could think. Whudda guy!

    • darren’o
      darren’o Year ago +1

      Whudda man whudda man whudda man whadda mighty gooood mannn

  • Lost Dragon
    Lost Dragon Year ago +10

    it's not odd that I was awed by Nikola's work and achievements.

  • Tracy A
    Tracy A Year ago +14

    Everytime I think Tesla can't impress me more I see something like this. That man was just incredible.

    • Tracy A
      Tracy A Year ago +1

      @Cellulaire Rare Yep! I've also seen a few really fine squirrels! They're too fast for me to catch though😞

    • Cellulaire Rare
      Cellulaire Rare Year ago

      @Tracy A what

    • Tracy A
      Tracy A Year ago

      @TheDarxide23 Tbh I've seen some pretty hot pigeons myself and I can understand the compulsion.

    • TheDarxide23
      TheDarxide23 Year ago +1

      He was also sexually attracted to pigeons. The more you know. :)

  • Gandalf the Inebriated
    Gandalf the Inebriated 5 months ago

    Tesla was known to think of physics in terms of waves, and I mean all fields of physics he dabbled in sincerity. It's a neat paradigm of mind, the wave-form. Even in software engineering, with many interacting parts, it can be useful to think of it in terms of waves when you debug and troubleshoot.

  • Kelana Indonesia
    Kelana Indonesia Year ago +3688

    I was in the middle of nowhere and ended up here. Hence I watch this glorious video till end

    • Codi Serville
      Codi Serville 6 months ago

      So shall we all

    • Brandon
      Brandon 7 months ago +1

      was tryna watch some music videos after smoking some good weed and now I'm here somehow 🤷‍♂️

    • Aditya Pal
      Aditya Pal 10 months ago

      Same !

    • Am Ali
      Am Ali Year ago

      @spontanious d

    • Am Ali
      Am Ali Year ago

      @FarzBZ 987 d

  • David Komakech
    David Komakech Year ago +2

    The venous system works similarly. The valves stop backflow, while forming a bucket structure that causes the blood to turn back in the direction of the heart. Please do a video on Viktor Schauberger, the Austrian forest warden who used vortices to enhance fluid flow efficiency instead of considering them a nuisance.

  • micky dee
    micky dee Year ago +47

    Nobody really knows how Nicolai Tesla mind worked. He was a genius.

  • hole shot shane
    hole shot shane Year ago +9

    I noticed that secondary routes in the valve were always smaller than the target main.

    NONG DAN TEXAS Year ago +5

    The DeltaP seems depending on the flow rate. This will work great for mixing applications not sure about replacing check valve applications.
    Great mind.! Great animation. Thanks.

  • Tom Daniels
    Tom Daniels 5 months ago

    This valve will be prone to clogging very easily, so any clog or blockage along the way will change the way the valve works. (if all those loops providing back pressure fail, it quickly becomes a two way valve)it is also much larger than the mechanical valves, also it says the tesla valve doesn't block flow completely so you will have a dripping faucet or whatever the valve is attached to
    so many reasons why this valve was never and will never be used( drip irrigation perhaps it isn't a total loss)

  • puchookida
    puchookida 2 years ago +475

    So the answer to can you create a valve without a moving part question is NO.
    The Tesla valve increases the pressure drop in one direction so the flow will be reduce drastically but their will be a flow... It allows then a control of the flow rate not a perfect stop of it. You would not be able to use this valve instead of all the valve that you shown at the beginning of the video.

    • JoHn
      JoHn Year ago

      He didn't say just VALVE, he said ONE WAY VALVE which means it's supposed to let liquid from one side to flow, and do not let from the other side.
      Surprised no one else explained this in the replies, did you guys even watch the video?

    • Robert Megee
      Robert Megee 2 years ago

      I wonder. I think that with normal resistance, you could restrict the flow with a long enough pipe. When you add in the resistance from Tesla's valve design, the length would be less. I realize this is a physicists approach where we can make the pipe semi-infinite if needed but, it the limit, it would stop all the flow.

    • Fasil Limerick
      Fasil Limerick 2 years ago +1

      Hi there, I'm Fasil. I studied electrical engineering so my knowledge of fluid dynamics is that I know it's a thing. I thought the same thing about it not being a proper valve. However I can see real world application as a way to reduce water hammer and allow for using a much smaller true one-way valve in series. But then, we're not talking about electron flow so what the hell do I know.

    • North Bound
      North Bound 2 years ago

      for the sake of conversation, wouldn't the fluid count as a moving part regardless of valve construction?

  • JJSC
    JJSC Year ago +18

    The counter-intuitive aspect is decreasing pressure during convergent flow. While velocity increases, one perceives that squeezing a flow into a smaller volume will increase pressure rather than decrease.

    • Gerch Wurzelsepp
      Gerch Wurzelsepp Year ago +1

      Can you explain in other words/examples why this happens? My mind has trouble dealing with this, and I had always thought the exact opposite. While not exactly important in my line of work, it sure can be embarrassing if I get this wrong on such a fundamental level, and I'll be teaching an apprentice soon, so help on this would be greatly appreciated.

  • aznpanda510x
    aznpanda510x Year ago +387

    Such a shame that he die because other people want his work. Just imagine what he could’ve created

    • David Komakech
      David Komakech Year ago

      @lian garvas Whaaat?! You mean the gods want us to remain backward and powerless?

    • lian garvas
      lian garvas Year ago

      @David Komakech “it was divine intervention, i swear”

    • David Komakech
      David Komakech Year ago

      Tesla invented a host of devices. Except that upon his death the powers that be raided his apartment and spirited away his patents.

    • Osai1234
      Osai1234 Year ago

      @Ironnads nice username

    • Azzga
      Azzga Year ago

      @Ezekiel Nduli feels like we only have people like that nowadays

  • Gelato
    Gelato Month ago

    this is so interesting. watching the flow of water has always intrigued me. whether being the oceans waves, my shower drain, rivers and streams, or how it looks with vibrations.

  • rudolph le roux
    rudolph le roux Year ago +5

    Under steady state conditions this valve will only yield a constant pressure drop without any further control to the pressure or flow. It looks intriguing but it is just one design for breaking a fluid during its flow pattern. Valves like these are actually horizontal orifices much like vertical orifice used in pitot tubes to measure pressure differentials. The real benefit to control would be if the directing vane angles could be altered through another mechanism to then alter the flow and pressure gradient through each subsequent units.

    • Prasad Jonnalagedda
      Prasad Jonnalagedda Year ago

      once we introduce moving parts, the basic spirit of the invention may get effected. i am wondering about additional units arranged in a pattern, some how creating a fluid transistor/ diode kind of circuits.

  • هيا نقرأ بالانجليزي

    I am more impressed with the valves with moving parts in the first 15 seconds of the video compared to the rest of the video.

  • George Fan
    George Fan 2 years ago +113

    Also the primary flow in tesla valve isn’t a straight line. For every section of the “bucket” structure the primary path is tilted so that it matches the entrance of the next bucket structure, so making is very effective at dividing the primary flow into a secondary flow that opposes itself

  • CMG30
    CMG30 Year ago +19

    One would expect that the valve might actually let more fluid through the wrong way if you LOWER the input pressure.

    • tiny99990
      tiny99990 Year ago

      @Broken TomBot That makes a certain sense, but with a constant pressure on the turn wouldn't that force it to make it?
      I guess not because it could be so low that the water just starts to skip the turn all together and the water in the turn simply acts as a stopper.

    • Broken TomBot
      Broken TomBot Year ago +1

      @tiny99990 That turn would offer resistance and so at a low enough pressure it wouldn't make the turn and thus the flow would be down the main passage way.

    • tiny99990
      tiny99990 Year ago

      @Broken TomBot Again I am just a highschool grad but it'd seem to me the minimum pressure to have it flow through the valve would be pressure period, so long as the pressure is constant and the pressure on the exit is not greater.

    • Broken TomBot
      Broken TomBot Year ago +1

      @tiny99990 Well there is a minimum pressure/volume to get it to work I suppose.

    • tiny99990
      tiny99990 Year ago

      That is interesting thought, if I am understanding correctly you are saying that the lower the input pressure the valve would let more fluid through, it makes a kind of sense, but I think that because the input pressure is reduced the amount of reverse pressure to reduce flow is reduced at the same rate making it increase/decrease flow at the same rate.

  • Duo Bunny
    Duo Bunny Year ago +1

    "One of the best things about dude is that he never takes credit for himself when he achieves something. He always respect us, the audience, and his team, and he is always polite in all of his videos. We congratulate ourselves on this achievement. More to come and everything to come''''❤❤😍😍...""...

  • Jeno Csupor
    Jeno Csupor Year ago

    In essence it is a very simple idea. Break the flow into 2 pipes, one straight, and bend the other one to go into the opposite direction, when reunited. The reverse flow mostly ignores the second pipe because of its perpendicular-opposite direction. I don't think that Teslas design would work as a flood barrier though, with a road put in the middle. It probably works just when the pressure/size is big enough.

  • Roy Oetting
    Roy Oetting Year ago

    I designed one that is simpler and was used in a pneumatic motor to provide lubrication only when the motor was operated in one direction and not in the other. It was patented around 1990.

  • Tony
    Tony 6 months ago +22

    I wonder if the Tesla valve can be used as a muffler or a silencer to minimize sound wave travel…

    • Dan Win
      Dan Win 6 months ago

      It can but it's not as well since water and sound are way too different. Sounds can go through objects as well while water can't. That's why there are specific materials used to lower sounds such as foam.

  • xjet
    xjet 2 years ago +729

    I have never seen an actual *working* pulsejet engine using the Tesla valve. The reason for this is that the valve is too "soft" and absorbs a lot of gas before it is "full" and the choking effect becomes pronounced enough to cause compression in the combustion chamber. For that reason, any engine built with such a valve would be unlikely to run well -- if at all.

    • H.O.Scalemodeler4501
      H.O.Scalemodeler4501 10 months ago

      @Melon Lord Yeah I mean how often would you actually encounter a pulse jet engine, or know the exact valve type inside.

    • FPV Angel
      FPV Angel Year ago

      This is omitting the electrical applications the design is really intended for.

    • outfoxed2006
      outfoxed2006 Year ago +1

      @notahotshot Keep telling yourself that, I guess.

  • Chizypuff
    Chizypuff 9 months ago

    I actually figured that once water had filled the side pockets, they wouldn't empty out back into the main stream but just stay filled due to the main stream being higher pressure, then the water has a slightly bumpier ride but is all in all mostly uninterupted

  • John Hanes
    John Hanes Year ago +1

    In airflow through a duct in HVAC applications, turbulence causes restriction to flow. Turning vanes and proper transition design is vastly important, especially when the pressure available to move the air is so small. A small restriction doesn't cause a small difference in air distribution to an outlet, a small restriction means almost all the air goes to the least restrictive path. Poor duct design or installation can make air balancing almost impossible.

  • Dragon Gaming
    Dragon Gaming 2 months ago

    I love the homage to science and educational TV by using the phrase "why is it so?"

  • Don Schlichter
    Don Schlichter Year ago +3

    Very cool in its simplicity. It makes me think that such a valve could be applied to mechanical combustion engines as far as two strokes, replacing, or modifying, the reed valve. Food for thought. (has it been done?)

  • anomaly P
    anomaly P Year ago +1

    This is quality reminding me of old educational videos. Simply superb!

  • Matthew Hendy
    Matthew Hendy 2 years ago +100

    Tesla was a true genius. His ideas were so simple and beautiful.

    • Vick Prakash
      Vick Prakash 2 years ago +1

      Personally, I wouldn’t say his ideas were simple as what he provided to the world with Alternating Current is still quite complex to the average individual. When you dive deep into his research and inventions, it’s downright remarkable. For the average individual, it’s just turn a light switch on or turn the tv on and it works.....but in reality with frequencies, potential differences, step up or step down transformers, AC motor and generators and the Battle of Currents, he changed the livelihood of the entire world and died penniless and infamous.

    • anom
      anom 2 years ago

      Breaking news.. tesla was a ingenious

    • Body Of A Legend
      Body Of A Legend 2 years ago


  • M Luna
    M Luna Month ago

    What an amazing mind! Still very curious about his Resonance Oscillators and especially since would would think an 'Anti' version could be created...

  • steve j
    steve j Year ago

    The last diagram looks similar to water drip emitters used in irrigation , the flow is relatively the same under several different pressures . I made the EDM dies for Olsen Irrigations drip emitters which is how I know the internal design .

  • MECH Tech.
    MECH Tech. 6 months ago

    Awesome Explanation of the excellent concept. I'm interested in doing a CFD simulation of this valve after watching this video.

  • Witty Warbler
    Witty Warbler Year ago +1

    I mean, while he did patent it, I feel like since it's used in so many applications its less of a product and more of an invention, but I digress. Interesting video!

  • Philip B
    Philip B 6 months ago

    I'm sitting here thinking at 5am. The T valve could be used in my theory to separate miroplastics from our oceans. In a large scale and reversed, it could be used to separate MP's utilizing the votexes while allowing larger things/wildlife to pass through. The plastics being lighter will favor the secondary channel so that is where we place a filter fork with no suction, only an air regulator to control the pocket at a height. Miroplastics will pass through a screen and follow natural bouncy to the filter above. For heavier plastics place screen and filter at vortexes later in the valve. I'm still working on the filtration process.

  • Nischal S
    Nischal S 2 years ago +1019

    So this valve can only reduce pressure and not completely stop the flow of liquid.
    So complete stopping of water without moving parts still is impossible

    • Kasper Kerkhof
      Kasper Kerkhof Year ago

      I don't think it could ever completely stop the water. If the valve is infinitely long the velocity of the stream at the end is 1/infinty > 0.

    • Ben Davis
      Ben Davis Year ago

      It needs the dynamics of flow always and forever to do it’s thing so it really can’t stop the fluid completely.

    • Windhelm Guard
      Windhelm Guard Year ago

      you can still stop the flow completely by adding two electrodes and a magnet. send a DC current through the water causes the water to develop a a magnetic field, which the magnet can push back against. this effect would be barely a factor normally, but after the pressure has been drastically reduced by the tesla valve, it should be enough to stop the flow or perhaps even reverse it.
      if you use a liquid with better conductivity then water, like mercury or NaK, you can even build a pump with no moving parts this way.

    • Kotresh G
      Kotresh G Year ago

      @download333 but there's a problem in your idea, even when the liquid is travelling in the correct direction, a small amount of it will freeze with time, and after quite a bit of time, the liquid will be frozen completely. Yeah it's true that the opposite direction will take a lot less time than the correct direction but still after some time it will definately freeze completely blocking flow of liquids both ways

  • jdmJ03+
    jdmJ03+ Year ago +24

    Makes you wonder if they had Tesla's works in mind when designing tire treads that push rain out from under the contact patch. Cuz I'm looking at the first set uof examples up to the 3 minute mark and can't help but see tire technology as well.

  • elementalsigil
    elementalsigil Year ago

    I find it amazing that the past can have a strong influence on the future. Inventers sometimes create a thing before its time and it is a shame that they do not benefit from their genius of it. As long as we have those intelligent to utilize those inventions they are not lost to time.

  • William Bougart
    William Bougart 5 months ago

    i can see he left one minor but really a major part and can understand why he didnt reveal it. such a genius Tesla

  • Siddharth Arora
    Siddharth Arora Year ago

    Somehow it popped up in my recommendations and now I am unable to let it go without watching the entire video ✌️✌️... The way of explaining along with the animation is quite appreciable ✨✨

  • Roman Zerstören
    Roman Zerstören 10 months ago

    This video reminds me of another old-school video about car differential. Another masterpiece.

  • RandomYT05
    RandomYT05 2 years ago +317

    That man was a genius for creating things that are even used today.

    • Roachwerks
      Roachwerks Year ago

      @Frances Farmer you dont even have the story right. idk where this "edison evil, but tesla genius" thing came from. tesla had people working for him too do you could discredit his inventions the same way... he invented AC electricity and then spent the rest of his career chasing ghosts that werent even physically possible, which many people told him. they were both great inventors edison was just much better at business and marketing

    • chupachups
      chupachups Year ago

      @stephen michael because tesla send the project via brain transmission...

    • Xerxis
      Xerxis Year ago

      @Dave Smith
      Edison did not invent the light bulb. Saying that he did is the same as saying that Elon Musk invented electrical car which is complete nonsense. There were many many people before Edison that came up with working concepts of lightbulb: Warren de la Rue, Frederick de Moleyns, John W. Starr, Alexander Lodygin etc. Edison just patented some improvements of other people design. And if you think that this is enough to say that he is the inventor of a light bulb then you should also consider Lodygin the inventor of the light bulb too. Because Lodygin was the one who came up with the idea of using spiral tungsten filaments and actually patented it. And in the end it his design that was used for almost a century and it is still used in modern light bulbs. Yet almost nobody knows about him but everybody knows Edison.

    • stephen michael
      stephen michael Year ago +5

      Edison did not invent the light bulb. Light bulb was found in Egypt aged thousands of years. There was a light bulb carved/draws at the wall of pyramid as well.
      Don't be serious, I was just joking haha

    • Dumy Fluturas
      Dumy Fluturas Year ago

      @Dave Smith ok.

  • Willie
    Willie Year ago +16

    Wouldn't this design be an ideal part of a hand pump? Water squishes easily one way (the down stroke), but doesn't pull back easily on the up stroke.

    • N Lynch
      N Lynch Year ago

      Very interesting idea, though I suspect the lifespan vs the simplicity of manufacturing a conventional valve still gives them the advantage, its not like conventional well hand pump valves have a particular need for tight fit and peak efficiency

    • Alfian Alamsyah Jayakelana
      Alfian Alamsyah Jayakelana Year ago +2

      As far as I know, hand pump already have some mechanic to do it

  • 1337GameDev
    1337GameDev Year ago

    This is ingenious. Wow.
    Awesome explanation and visuals too!

  • MrBull
    MrBull 22 days ago

    this may have come out 2 years ago but recently i watched a gaming engineer testing what would happen and it actually worked and i was in aw

  • 𝚆𝚞𝚝𝚣𝚖𝚢𝚗𝚊𝚖𝚎

    I knew about this valve but had no idea the modern applications that use it. WONDERFUL

  • wayne parkinson
    wayne parkinson Year ago

    In my opinion A barrel flow inset would be the most efficient to improve flow within a pipe as pressure flow with the centrifugal forces acting on it would help with consistency of flow dynamics , Not that im saying tesslers theory isn't allied im sure it is ,its just whether it can be applied to a stop valve mechanism or not my theory what i do know is the less moving parts you have in a mechanism reduces the potential for replacement , failed system so the simpler the better

  • Pthirus Pubis
    Pthirus Pubis 2 years ago +2044

    Well I'm suprised the video does not show an actual water test.

    • InThe MaZe
      InThe MaZe Year ago

      @insert good name clip-share.net/video/sxvIQMnKhIg/video.html
      This video will help a bit. Many more like this. It really is a valve, just no moving parts as I have stated numerous times above. I've worked with many valves, motors, hoses, connections for many years as im a hydraulic and pneumatics engineer for a earth drilling manufacturer. If I don't approve it, it doesn't go on the machine. Got it, ive done every bill of material, on each standard unit, which includes, triplex mud pumps, water cleaning systems, and drilling units. When it comes to custom designs, im the one on the clock.

    • insert good name
      insert good name Year ago

      @InThe MaZe Don't know, but I'm seemingly a *common sense* "expert".

    • InThe MaZe
      InThe MaZe Year ago

      @insert good name , valve expert?

    • Pthirus Pubis
      Pthirus Pubis Year ago

      @insert good name Yes I know its a toy, but it's interesting!

    • insert good name
      insert good name Year ago +1

      @Pthirus Pubis It's not a true valve. It just slows the water down (marginally at best). How would you use this in real life. There is a reason you don't see this being used.

  • Cavios
    Cavios Year ago +8

    In 6 minutes, this channel taught me more about thinking like an engineer than my electrical engineer father ever did. Thanks for the mentorship, maybe I should have studied engineering.

  • Bolims
    Bolims Year ago

    Truly a genius!👍👍👍

  • Daniel Ash
    Daniel Ash Year ago

    The ring style is neat for flow to specific areas as well port to port shaping.

  • Out of blue
    Out of blue Year ago

    I think this also can be used for river to reduce floods!
    Simple structure is tough against break and cheaper.
    But I didn’t know Tesla has developed in dynamics field not in electric engineering.

  • RageTheGod
    RageTheGod Year ago +1

    Dissolved solid buildup within a short time would render the valve useless. Mechanical valves can suffer the same, but the movement is often enough to restrict mineral buildup. I can only assume the same for unburnt fuel and carbon doposits in the pulsejet in the high turbulence areas leading to valve failure.

  • CakeOfDoom
    CakeOfDoom 2 years ago +27

    You guys forgot to mention another genius effect of this valve, which is the reason why it isn't near 180° (for example 178°): when the flow of one secondary stream mixes with the main stream, it doesnt just slow the mainstream down, it redirects its forces into the following secondary stream, since the secondary flow comes in at an angle instead of (near-)directly from the opposite side. Thus the force in the following secondary valve is increased, helping it to slow down the main stream even more.

    • Oscar Silver
      Oscar Silver 2 years ago

      I was waiting the entire video for them to mention that 😁

  • humberto castro
    humberto castro Year ago

    Muchas gracias por su gran trabajo.... muy bien explicado. 👍

  • Jason Samfield
    Jason Samfield Year ago

    And that's two dimensional.
    You could alternate units in the third dimension as well, or increase the number and density by adding successive units at small angular changes with many alternating pairs.
    Then spiral the design to elongate the valve length.

  • willy reeves
    willy reeves Year ago

    would have nice to see how it behaves in a situation where the flow reverses periodically

  • hey you , hi.
    hey you , hi. Year ago

    When I was a kid I read without prompting books that to this day I enjoy. Nikola Tesla was one of them. Interesting indeed

  • Readioheed
    Readioheed Year ago

    Yes, I am very awed by the man's genius!

  • RainToShine
    RainToShine 2 years ago +756

    I don't think it's possible to understand how Tesla's mind actually worked.

    • Reynaldo Flores
      Reynaldo Flores Year ago

      Had his IQ ever been officially measured? He would easily be in the 300 range.

    • pianoboy Laker
      pianoboy Laker Year ago


    • pianoboy Laker
      pianoboy Laker Year ago

      Yeah, I'm pretty sure he was in two minds about it though.

    • SinHurr
      SinHurr Year ago

      Man loved his pigeons.

  • YeeYee Diesel
    YeeYee Diesel Year ago

    Great animations. This tesla valve reminds me of a one way clutch, like one in a transmission. Especially the design. Looks somewhat familiar to that of a mechanical diode...

  • Petr Novák
    Petr Novák 3 months ago +1

    i would love to see some data of flow differences on the first example/choice

    • James R
      James R 2 months ago +1

      Agreed. Apart from some small turbulence in the centre flow vs the wall both directions seem horizontally symmetrical.

  • michael sarkisian

    Since you did this video on fluid dynamics, how about a video on how a sound suppressor works?

  • Philip Ponka
    Philip Ponka Year ago

    very interesting concept, he was a brilliant man. Simpler is better for an invention.

  • KC
    KC Year ago

    I was wondering for what he designed this when watching this video, at the end, I noticed how brilliant the design was

  • Jocelyn Joseph
    Jocelyn Joseph 2 years ago +104

    The teaching method is excellent. Tesla valve is remarkable.

    • My Big Digger
      My Big Digger 2 years ago

      Its not a valve if you cant turn it off 😂😂😂😂

    • Jocelyn Joseph
      Jocelyn Joseph 2 years ago

      @Sir Crapalot Not true. Time is determined by the interval during which displacement ceases or slows.
      This means that you take the high speed TGO train 🚂🚋🚃🚋🚃🚋🚃in France to cover 650 km in one hour. Then you get held up in a taxi in the tunnel to the British Isles for two hours. The net speed is reduced to less than a third.
      It is important to include tunnel travel since they are the main links 🔗 during transportation today whereby distance is shortened and water bodies like sea or rivers may be crossed at high speed 🚴三🚴三🚴三.

    • Sir Crapalot
      Sir Crapalot 2 years ago

      @Jocelyn Joseph Trains don't spend much of their transit time within tunnels. Adding a bunch of complex machinery (turbojets? SERIOUSLY?) to be used for such a short period of time is a waste of cost and effort. Long tunnels also have built-in ventilation systems to get rid of exhaust gases. The air doesn't just pile up and stagnate.

    • Jocelyn Joseph
      Jocelyn Joseph 2 years ago

      @Sir Crapalot Application of newer technology is much needed. A train 🚂🚋🚃🚋🚃🚋🚃in a tunnel with walls that reflect the divergent air on to the rear of the train would have twice the efficiency of trains today. Using turbo jets to clear air from the front would prevent wind resistance in the tunnel while additional forward thrust is developed. Directing this displaced jet of air on to a modified Tesla mechanism on the tunnel walls to redirect the air jet on to the rear of the train would again add forward thrust. This is significant since wind resistance at 100 mph is equal to the weight force of the average vehicle. Also, the hyperloop intended to remove air resistance by creating partial vacuum in a tube is more dangerous than the Titanic.
      Lastly, Tesla has been successfully tested in jet and rocket propulsion. It's a topic to be studied by all engineers in this field. 🚴三 happy traveling.

  • woodstock
    woodstock Year ago

    the cool thing about the check valves in the beginning is they actually work. they don't just restrict flow they completely stop it which is the purpose of a check valve. imagine putting this on the discharge of a pump thinking your sump wouldn't fill bacck up from the weight of the fluid you're pumping.

  • Landoragan
    Landoragan Year ago +7

    Truly an under appreciated genius mind of science was Mr.Tesla. There’s been none like him since.

    • AZCobraman
      AZCobraman Year ago +2

      Except the guys that invented the transistor, the laser, the microchip, split the atom....

  • Bi Pee
    Bi Pee 10 months ago

    I always think that whoever invented tesla coils is a genius

  • Robert McGarry
    Robert McGarry Year ago +4

    Think of this thing more as a damper than a true, air tight, one way valve. It can be used to control flow rates inside of a system under pressure. It can stop reverse flow events from back propagating through a semi pressurized, or gravity fed system.
    What if someone gave this shape to an AI and asked it to give a better design? What do you think it would look like? How many times could you sub branch the main shape before the effectiveness is diminished? Can you imagine a 3D pipe shape that would work as well as this shape? Like conical pieces inside of conical paths. The secondary branching would need to redirect the fluid as it rebounded off the back side of the inner cone. And bringing it back together at the narrowest point, directly behind. So, in some sense, the secondary paths would be better if they had slightly more diameter than the "main" path. Forcing the fluid to go that direction.

    • N Lynch
      N Lynch Year ago

      @Zar TheMad Tell us you don't know anything about engineering without telling us you don't know anything about engineering

    • Zar TheMad
      Zar TheMad Year ago

      The AI would slap you and tell you to either use a check valve or to use a pilot operated valve. ... Hell if you want it to leak backwards just like the Tesla "valve" then drill a hole in the plate of the check.

  • runcycleskixc
    runcycleskixc Year ago

    The wiki page says that, for the Tesla valve, the reverse low is 15-40x lower compared to the forward flow. This ratio may not be sufficient for some applications. Valves shown in the first few seconds of the video can be made much more efficient than this.

  • Mircea Staicu
    Mircea Staicu 2 years ago +38

    One thing that would be worth mentioning is that Tesla's design relies a lot on Bernoulli's principle. The trade off, in this application, is between pressure and speed. The speed is determined by the Coandă effect. According to the definition, if a fluid meets a curved surface, in our case the added obstructions, it will attempt to follow it. When this happens, the fluid that needs to travel further on the encountered obstruction will speed up (and drop in pressure), resulting in a higher velocity, which will result in the diverging stream clashing with the main stream, obstructing it

    • Susman Schussmann
      Susman Schussmann 2 years ago

      Asa este Mircea, bine punctat! Good work there!

    • Mircea Staicu
      Mircea Staicu 2 years ago

      @COMMENT Right, got it!

      COMMENT 2 years ago

      @Mircea Staicu There is no "correct theory", it is simply a theory, not having all the datum of each subsequent obstruction and / or separation of the fluids. Basics in physic... the more obstructions in the flow path, the lower the ve locity of the flow and the increase in the pressure, if there is a constant force applied to cause the flow i nt the fiorst place

    • James Alonzo
      James Alonzo 2 years ago

      Yes, and the design also has similar affects as Archimedes describes with pulleys. But most importantly it all ties into the theroy of relativity and how we are moving thru spac and time. I think

    • Mircea Staicu
      Mircea Staicu 2 years ago

      @FEIZAL Can you share with us a link to a resource that outlines the correct theory? I'm sure a lot of people will be curious about it

  • Nick Putkaradze
    Nick Putkaradze Year ago +131

    Basically, it's a diode. Can't wait to see fluid transistors

    • natc
      natc Year ago +1

      @Jass Zoigel it's probably not that much more work than getting an electric current to do the same, for all I know it might might be less. Just way slower and requiring a lot more lifting.

    • jpegxguy
      jpegxguy Year ago

      Steve Mould made a computer with logic gates that work on liquids

    • Sumit Mishra
      Sumit Mishra Year ago +3

      @Nick Putkaradze long live cherry boy

    • Nick Putkaradze
      Nick Putkaradze Year ago +3

      @Sumit Mishra man of culture

    • Sumit Mishra
      Sumit Mishra Year ago +3

      Lero lero lero lero

  • Leo Rian
    Leo Rian Year ago +14

    seria interessante se voces disponibilizazem legenda em outras línguas para este tipo de conteudo

  • Doov
    Doov Year ago +1

    I like that one can specifically use the small throughput to one's advantage

  • Michael Zaccarini

    They're cambered like a wing, this man really is a genius.

    WALLAROO Year ago

    The valve looks like many different types of plants - I wonder if he was watching rain flow down a plant one dreary day, looking out his lab window, as it hit the plant with velocity, but was caught, slowed, and then channeled down the stem to the plant root, and... he just kinda duplicated that. It's the way minds like his work - find something that *already* works, and make it work better/in a different application.

  • Zach Steiner
    Zach Steiner Year ago +57

    The more I learn about Tesla, the more I realize just how much our world loss with his passing. He was born in a time that could appreciate him but that could not fully utilize him.

    • Adam Wal
      Adam Wal 10 months ago

      @steeledminer616 What you posted is nonsense.
      PS Tesla admired Edison.

    • steeledminer616
      steeledminer616 Year ago

      @aguyfromnothere Electronics as we know them wouldn't be the same if we didn't have him so I don't think this is a true statement at all.
      Edison had already pushed for his own style of electronics, the only reason they were changed were that Tesla challenged it.
      Tesla was very unique in how fast he could test stuff, without any resources at that. He could come up with a nearly flawless theory on thought projects alone.

    • HELLios6
      HELLios6 Year ago

      @aguyfromnothere Untrue statement.

    • aguyfromnothere
      aguyfromnothere Year ago +1

      GIven most meaningful discoveries are simultaneously discovered it is unlikely any one person makes much difference in the overall accumulation of knowledge. It is sad we loss Tesla but we likely lost no scientific progress.

    • SoloSailor sv
      SoloSailor sv Year ago +3

      Died unsung because he wouldn't develop a Rail Gun for the Gov. Good Man

  • John Trustworthy
    John Trustworthy Year ago

    So, does pairing it with a normal one way valve reduce stress on the moving parts of the normal valve?

  • theoriginaljean
    theoriginaljean Year ago

    He had great understanding on the nature of water and how to apply it to motion

  • Cupim Marceneiro
    Cupim Marceneiro Year ago

    Acredito eu que ele simplesmente observou e estudou a anatomia das veias do corpo humano. É o mesmo princípio!