Tesla Valve Explained With Fire

[@Nighthawkinlight]

Interested in seeing more lost technology? See my most recent video about recreating an ancient Japanese firework: kzbin.info/www/bejne/r6fShox7qpiiY8U

[@subpoena.]

very cool

[@Hickeroar]

What's a practical use for the Tesla Valve? Are they in regular use anywhere today?

[@RAW_Reality]

@@Hickeroar This invention was never meant for typical "day to day" functions like that of use in hydraulics or other "pump"-like situations because it A) doesn't have a release, B) only is meant to directionalize flow, and C) won't prevent _ALL_ flow (of either direction). Also, it's not nearly as cost effective as the other forms of typical valve systems that exist, nor was it ever intended to be used as such. It pretty much only has a practical use in fluidics, which isn't what most people would even understand without a background in micro-engineering. It's effectively a diode, not a true "valve", as there are no flaps/points of full restriction, but typicallly most people don't care enough to fight for the name of "Tesla Diode" to the patent office. Also, it should be noted that this video does _not_ represent a "true" Tesla Valve's form, as the ports are misaligned, not at the correct internal depth, and the loop-backs aren't fully functioning as Nikola's design would have. Had they been a full "100%" replication, the gas flowing "back to front" through it likely wouldn't have traveled as far as it did. In Tesla's full design, restrictive force multiplies by a factor of 1.7x per rung, needing exponentially more force to travel further through.

[@Hickeroar]

@@RAW_Reality Very cool! Thanks for the explanation.

[@thecrazy8888]

No I want to see the supersonic gas acceleration!

[@gog711]

Hello, I am a physics teacher from Egypt. I am a huge fan of your work! I love how easily and effectively you explain these phenomena. Thank you sir.

[@revimfadli4666]

Wow do you use them to teach? I'd envy your students if so

[@gog711]

Revi M Fadli I try to use either real experiments or send them links to great KZbin videos such as this one

[@AC-hj9tv]

Cool

[@kodman15323]

with a title suffix like “explained with fire” it didn’t even matter what this video was about I was sold. In all seriousness that was an awesome video. Very interesting.

[@johnkimble9965]

Yeah! More things should be explained with fire. 😊

[@vusi5902]

Gotta love fire

[@frozen1255]

Not a single word in the short

[@Tom-yc8jv]

Maybe he can watch a video on how to pronounce "Valve" correctly, instead of "Velve"

[@JonasNeumann6]

Use balloons and watch how fast they shrink when their air is released into the valve. Of course you would need to use an airtight adapter for accuracy

[@HardCoreMore]

That is awesome idea.

[@presto709]

That would be interesting but a different issue. Here is trying to illustrate HOW it works. The balloon test would show how well it works.

[@matevarga3040]

@@presto709 Colored smoke inside the ballonne maybe?

[@regal_7877]

At first I thought this wouldn't work, but upon careful consideration it is a pretty good idea. Also this brings up some interesting applications and questions. If a proper setup is made (following your model), can this valve theoretically infinitely accelerate airflow?

[@JustinNovack]

You spelled "velve" wrong.

[@davenporttj13]

I would be interested to see what the differences are in comparison to just a straight pipe and either direction in this valve to really get a good idea of how much acceleration/deceleration is happening with each direction of travel in the valve.

[@otakuryuga3221]

Yes the speed is definitely different, I think both the size of pipe n amount of gas inputted will matter however I’m sure this one would definitely be faster because it has rapid increase meanwhile others will have constant increase.

[@MonteFleming]

There's a lot going on--I'd like to see it at a much higher framerate.

[@petergoestohollywood382]

Dial playback time of the footage to 1/4 and you’re good to go 👍

[@realfoggy]

Smartereveryday or slowmoguys

[@jotaro4874]

@@realfoggy totally the slowmo guys, they are made for this job, while smarter every day could experiment on this

[@pppsss5653]

@@petergoestohollywood382 Thank you Peter .. it is really a cool way of watching.

[@whitewidowgaming4887]

@@realfoggy my first thought

[@skulengu6854]

I had seen the Tesla valve in one of his (Nikola Tesla's) drawings. While it is fairly easy to comprehend, it is so incredible to watch it in action. I would have never even thought about the fact that the flame front would accelerate in the opposite direction. I had been so focused on the fact that it would arrest the passage when trying to run backwards, that I didn't even think about it. He was operating on another plane of consciousness, to say the least. This was such a simple but elegant way to demonstrate his valve. It was thrilling for a mechanical/science nerd like myself to actually watch this demonstration. It reminded me of watching a feather fall like a rock inside of a vacuum chamber. It is so much better to witness than it is to read about. Thank you so much.

[@shanerountree3623]

I agree, this is the best visual example of how the Tesla Valve works that I've seen yet

[@emissarygw2264]

@@shanerountree3623 quick notes: as the video observes, using a combusting gas causes expansion/acceleration inside the valve, which causes this visual to be a bit misleading. Second, the fact that he's using a short pulse of gas rather than a steady stream means there is no positive pressure preventing the massive back flow that we see. I suspect we would see something quite different with smoke and an air pump. I would also be really curious if we would see some periodic resonance in the flow at steady state or if it would just be random chaotic turbulent flow.

[@shanerountree3623]

@@emissarygw2264 very true, I should clarify that this example reallyshows how the flow acts in the valve in an cool visual manner.

[@demonsluger]

School should let ppl experiment more not just read and write.

[@inventgineer]

Tesla Velve* lol

[@AppliedScience]

Really great idea! Beautifully demonstrated and explained as well!

[@sahinyasar9119]

Dont you think its better if he used 3d version of Tesla valve for instead 2d version

[@colossalproductionsmeme4906]

Fr

[@willo7734]

That’s a really cool phenomenon! I wasn’t aware of Tesla valves before this but the concept makes sense. This makes me think that it’d be neat to rig up something with different powdered metals in each chamber. I’m envisioning different colored flames in each section of the valve. I don’t know how feasible that would be. Awesome video!

[@WPKaverage]

I am stuck on him saying velve instead of valve.

[@thealchemist9025]

me too

[@jacksonhendry4709]

Same, that’s the whole reason I looked through the comments. I couldn’t have been the only one.

[@96dragonhunter]

vulva

[@footsoldier857]

Posta...

[@optikradio]

Glad it's not just me.

[@Mireaze]

Up next, explaining the human vascular system using fire

[@maxzzzie]

Using taco bell i mean?

[@samalbury9183]

@@maxzzzie vascular is veins and arteries

[@maxzzzie]

@@samalbury9183 i didn't know. Just guessed xD

[@rap6586]

... using a real human vascular system

[@IneptOrange]

God I hope someone injects napalm directly between my toes

[@iamdarkyoshi]

I'd like to see water mixed with a particulate like glitter being pumped through this valve. The flame demo was really visually interesting though

[@professordanfurmanek3732]

Retired University Physics Professor: Where I still teaching, this would be required viewing for every student! These valves have been known about for a long time but I've never seen them explained any better! Kudos on a job well done!

[@MCphattyStoolz]

Hey "professor", it's WERE

[@michaeladolf628]

@@MCphattyStoolz I knew that's what the one comment was going to be. lol. Dan Furmanek worked at the University of Buffalo... as an Adjunct Professor... so... position and grammar = non-essential

[@gargoyleb]

Could something like this be applied to accelerate ions?

[@vibeuel]

I loved when you said,”it’s actually louder” because in a way this is exactly how a ruffle suppressor works. The gases released by the combustion of the power is what’s causing most of the noise other than the projectile making its own dispersion of the air around it. A suppressor is kind of like a bunch of holes and stuff with a path for the bullet and so when the expanding gases exit the barrel they are slowed down by their own turbulent way of moving around and so the effectiveness just comes down to what design helps me release the pressure slow enough so suppress the noise but not decreasing velocity or compromising the unit

[@jotaro4874]

Maybe very small modified version of this valve could act as a suppressor

[@aprilbehling498]

@@jotaro4874 my thoughts exactlt

[@omgz8876]

Sound is a relativity thing governed by particle state, in aircraft design its also there for the combustion, supersonic & hyper-sonic combustion. So everything you're hearing, which can be considered as loud from gun fire, is probably breaking the sound barrier including the combustion of the ammunitions fuel. eg; gunpowder combustion velocity and projectile velocity. Pressure and Temperature will also make a difference. Particle state is everything, up to and including charged particles traveling instantaneously (faster than light) around a pulsar star creating superluminal booms in an electron blue color via a vacuum known as the quantum vacuum. (pulsar emissions consist of Cherenkov radiation)

[@CHOPERUS23]

Actually most of the noise from a rifle bullet is down to the bullet travelling supersonic. Hence why silencers work better on subsonic ammunition.

[@omgz8876]

@@CHOPERUS23 ^^^^^^^THIS GUY^^^^^^

[@Mr.Engineer.]

Some one have probably already meantion this fact, so here it probably goes again: In my study on fire and explosion saftey I learned that the flame front in a combustable gas mix will accelerate over a distance. The fun thing is that turbulence in the flame front will make the burn accelerate even faster and that is what you see happens. At one point it will reach a critical speed where the flame front is faster than the speed of sound in the medium/gas mix and the flame front will get a sudden increase in speed. This causes even more turbulence and even further accelerate the flame speed. The transition between subsonic and supersonic flame speed the flame goes from deflagration to detonation. Simply put, you go from a burning flame to an explosion 😀 So you do not need more tesla valves, you just need more stuff inn there with sharp edges to create turbulence and a longer tube. Try it out with a long plexi tube and you will get the same results. One empty and one with a lot of obstacles. This is one of the reasons why a gas explosion is so much more dangerous in a confined space with a lot of stuff/obstacles than out in the open. Been a few years since I studied this topic, so correct me if I remembered it incorrectly. -The random KZbin mechanical engineer 🤘

[@saatie]

now that is some real brainfood

[@awildfilingcabinet6239]

So you’re saying the more things in the way, the faster it goes? That’s interesting

[@Mr.Engineer.]

Not exactly, you do not want to obstruct the flame so much that it can't continue, but yeah, the more turbulence you can create in the gas mix the faster the flame will burn. Objects with hard corners will do this as the burning flame front will push on the gas mix infront of it, speeding it up and thereby creating turbulence when the accelerating gas mix hits the objects and disrupt its flow. But it is the turbulence that is the key, so you are free to introduce it into the system however you like.

[@Mr.Engineer.]

Filing cabinets hanging from the roof in a 40 feet container filled with hydrogen and oxygen gas mix would make an perfect example! 👌

[@davidk7529]

Yeah the assertion toward the end that the valve actually facilitates acceleration is simply false, showing that the guy didn't bother to learn physics thoroughly before making youtube videos.

[@CMAllstars]

If you say “velve” one more time! I kid, this is the most entertaining demo of it that I’ve seen!

[@michiganmitten1147]

This is how Michiganders say the word he lives in Michigan and I do too and this is how I speak

[@CMAllstars]

Lolol. I can’t really talk. I live in Louisiana and we pronounce all sorts of words weird!

[@yungstalin8936]

Computer Music All-stars haha same I can go anywhere else outside Louisiana and they just somehow know I’m from there when I speak even though my accent is barely present

[@JamieVegas]

Reminds me of my teacher who used to say "melk" instead of "milk."

[@SushiKing123NorskGaming]

@@JamieVegas In Norway we actually say "melk"!

[@llewellynpatrick160]

Thanks Ben - a first-class demo. It impressed me so much that when I needed a special respirator valve I remembered it and used a modified version. Great job.

[@coyotedomino]

i just heard about Tesla valves a month or so ago and this such a freaking _cool_ demonstration. i love this

[@mdrzn]

This needs a collaboration with the Slow Mo Guys to see it better.

[@LifeIsntHealthy]

@@mdrzn I was just thinking this!

[@greenthizzle4]

This valve was meant to be a flashback arrestor for hydrogen.. in the video he didn't make the buckets curve back into themselves enough though

[@TechIngredients]

Hey, really nice visual presentation! I believe, just like in a pulse jet engine, the sub atmospheric pressure in the wake of the mainline flow accelerates the return loop flow. I agree with your prediction on burn acceleration to supersonic speeds. Pulse detonation engines use flow restriction coils called a Shchelkin spiral to transition from a simple combustion to detonation.

[@Nighthawkinlight]

Wow, I did not know about Shchelkin spirals. I'll be looking into those quite a bit. Thank you!

[@PhilbyFavourites]

Now that is a clever guy. KZbin isn’t all bad after all!

[@jbay088]

Someone else has probably pointed it out already, but: The same reason you noted for the valve system accelerating the expanding gas forward through the valve, also explains why the gas creates fast jets in reverse when you're forcing it backwards through the valve. The expanding gas front finds it easier to turn around and go through the valve "the right way", speeding up in the process.

[@zerstorer335]

When the flame is going in the "fast" route, it actually reminds me of the V3 cannon from WWII. That cannon worked by having propellant charges in side chambers along the barrel that were angled towards the muzzle and, as the projectile passed each pair of chambers, they'd ignite, giving additional force to the projectile. It seems the same could be happening, here. Each time the flame front passes by one of the teardrops, there's a secondary front that makes it's way around the rounded edge and then accelerates down the straightaway back into the main flow, but behind the main front, possibly adding more speed to it.

[@thebobman69]

V3 cannon from WWII Well spotted, i wonder how segments it would need to meet peak velocity. Also, probably incorrect, but if you could put a few small segments of this valve at the back of a regular gun, prior to a riffle, maybe you could have a more efficent combustion/faster bullet velocity,

[@devenrobinson6861]

@@thebobman69 in my head if you add too much length you would build up too much pressure in one of the tear drops and cause failure at some point in the valve. But I'm not engineering inclined.

[@tecnezio7]

this seems like the combustion equivalent of a coil gun

[@Raythe]

Time to partner with the slow mo guys and smarter every day.

[@jemmapellemma8185]

YES please: this!

[@nicholasmcatee4613]

I can guarantee Destin would love to do the expanded video with you. Potentially throwing some type of projectile at the end...Perhaps. I am thinking 12 foot long with a cork ball at the end.

[@benschebella673]

Nighthawk in slowmo every day

[@EarlLee14]

EXACTLY WHAT I WAS THINKING!

[@classified150]

The three of them!

[@Starbelt]

I’m glad to learn about Tesla velves.

[@dalelarson5274]

I had to stop watching. Omg... Kinda want to slap him then buy him a beer and explain the correlation between proper pronunciation and OCD.

[@victorwelkin9136]

Does nobody appreciate local accents?

[@Simon-dm8zv]

So how would you pronounce valve, Emilia?

[@bodiless99]

@@victorwelkin9136 what accent do you think that that is?

[@splint077]

🤣 I came to the comments to find this. Velve, velve, velve 🤣

[@weaponologist1121]

Hey so this happens to be something that is quite interesting in the combustion world. Flame acceleration is caused by a few things but a common thought is that turbulence and flame instabilities are driving forces in flame acceleration. As you wrinkle a flame it gets more surface area, which in turn increases the heat release rate, thus making the flame go faster. You can in fact accelerate a flame to very high speeds possibly even supersonic speeds. An interesting phenomenon is whats called Deflagration to Detonation Transition (DDT) where an accelerating flame can form into a detonation wave under the correct conditions. Its still not fully understood but definitely something interesting to look into. Thanks for making this video! A lot of interesting physics going on here.

[@preciousplasticph]

so.. here is a additional twist... I used this same idea on a potato cannon. I was driving marble potato to speeds high enough to punch thru 1/2 inch plywood. But what if this was combined with the tesla valve to make a improved pulse jet?

[@DreadX10]

@@preciousplasticph How did you cause extra turbulence inside your potato-canon to speed up the burning-proces?

[@DreadX10]

Would be interesting to see a detonation wave-front navigating the Tesla-valve.

[@TC-xt8ts]

@@DreadX10 Could one possibly use this force for weapons of mass destruction? Asking for a friend

[@i-love-comountains3850]

@@DreadX10 Mythbusters did a great video on this, I think. Something like junk bailing wire crumpled up or anything really. NOT STEEL WOOL sweet baby jesus i found that out the hard way!!😨 Lol and yeah maybe avoid using rocks or something that could be swept up inti the barrel and block the exit during ignition...basically be sure not to create a giant claymore by accident😱😂

[@uniearesende]

5:02 - Algorithm brought me back here and now I wanna see the supersonic version of this experiment! Your work is amazing, btw.

[@pauls5745]

Yes, he never did come back this to do a super long Tesla valve. I've always hoped.

[@potlach001]

I'd like to see how fast you can get the flames to go in a long one

[@fat2slow]

Like 1 that is 100 feet long. Also I''d like to see one with a Solid Fuel inside and see if that burns faster also.

[@polygon2744]

I wonder could you make a propane engine that uses these as valves both intake and exhaust. No moving parts would be amazing for engines. 2 stroke in this case.

[@Saka_Mulia]

Or a circular one. Like a homemade flaming accelerator :D

[@polygon2744]

@@Saka_Mulia Amazing idea!

[@keithyinger3326]

I'd like to see that also. Then stick a ping pong ball in the exit end and see it it goes supersonic like they do with a vacuum cannon.

[@mattshiz]

Very interesting. The more I learn about Tesla, the more I realise how much of an under rated genius he was!

[@reddpill]

Now lookup Viktor Schauberger

[@exoticcreature3059]

@@reddpill Despite being immediately "discredited" by the mainstream pseudo science establishment, if you will, his technology is being utilized in turbine engines on commercial airplanes. Then end result, the airports charge enormous sums of money for fuel that the airplanes don't use.

[@Uncashill]

Exotic Creature As a former commercial Aircraft Mech. Trust me they use the Jet A

[@exoticcreature3059]

@@Uncashill I didn't say they don't use fuel. I said they don't use much. A lot less than what we're being led to believe.

[@mikedickerson2755]

Yes, and the deeper you look the more evil Edison gets..

[@mshayenj875]

I love how this channel has extremely educated followers.

[@JJRossi]

Agreed

[@mrljones01]

Mshayen J Then there’s me confused by all the comments

[@redcastlefan]

Well like minds think alike. This happens to me on twitch in particular Where after joining a community for a while, I start noticing people from that community in multiple other communities I'm part of. It almost feels like they're stalking me.

[@Bigloserbox]

Ooga booga i eat glue

[@kevinjohnson7300]

I read this comment and the comment directly below it talks about how he got a nerdboner when someone said supersonic speed

[@kevinleugan6037]

Normal people who want to visualize gas: Use a colored gas. NHL: SET a colorless GAS ON FIRE looped comparison snippet at the end was lit!

[@duddude321]

That pun was terrible and you should feel terrible. Have a Like.

[@matsudaindustries2530]

Do it longer! That would be interesting

[@ChrisWonder2]

Teaching cool sciencs things with interesting approaches like this is one of the many reasons why I love this channel

[@christiannettleton4174]

I've been a fan of the channel for years, starting with the static electricity generator video, which I ended up building the same device. I always light up when I see you've posted another video, thanks for all the awesome science, you rock.

[@Sigrafix]

So where's the supersonic extended tesla valve? Let's see it!

[@OFFtheCHIZANE]

If I had to guess this guy’s age, I could narrow it down to somewhere between 16 and 40

[@hedgehogmind3186]

12 and 40

[@dba_winchester7670]

@Sassy The Sasquatch I think they're talking about his round face. Round faces almost always reduce the look of age. With a beard he looks 30ish, without it, he would probably look 20ish. I used to be that way, then I lost weight XD

[@mdc4runner]

I’m thinking closer to 16 based on his use of the phrase “passage of gas”

[@jacobk.2706]

You missed it by like 4 years.

[@camofpv]

I’d guess 25-32

[@integza]

I wish I had this idea ! Such a creative way of testing the Tesla valve!

[@SiviVolk2]

Flame speed is actually dependant on the mixing - the more (turbulent) mixing you get, the faster flame front will move. So here you are visualising two different phenomena at once, instead of just showing how Tesla valve works. You can show velocities much beter by just pushing a water filled with particles (pepper dust) and film their movement, from which you can calculate the actual velocities with internet available software. Basically a DIY PIV measurement (Particle Image Velocimetry) which real scientists use :) Admittedly though, flame propagation through it looks very cool!

[@flatlandriver2471]

Old engineer here. Was unfamiliar with this valve. Thank You! Could use to make a woodstove chimney, could even put fins on the retardation loops to further enhance convective heat transfer. Could make a propane patio heater that doesn’t just blow all the heat out the top.

[@angelocarantino4803]

That's an awesome idea :)

[@brucearterbury1856]

This makes me wonder about the benefits of incorporating the Tesla Valve into a rocket stove/thermo-mass heater.

[@sharkbite951]

This has got to be one of the best demonstrations of anything that I've ever seen. Definitely looking forward to a longer one in the future, as well as other experiments with this type of flow valve.

[@mikeboyd79]

This is extremely cool, I would love to see you do more with the sped up flamefront in the Tesla valve, like maybe create an extremely long one and see just how fast you can accelerate the flamefront

[@sublimesmoka410]

To understand the reason for the acceleration of the backward flow, remember that acceleration is calculated speed and velocity. The tear drop shape baffles force the medium to accelerate by forcing it to change direction. An object traveling in a circle is under constant acceleration. It’s been almost 20 years since high school physics, so I may be a little fuzzy.

[@Miranda.Powers]

(clicked here from the shorts) nifty video! I could watch that side by side for hours it's so neat. Thanks for sharing 💜

[@Donteatacowman]

You explained this, and I'm like "Oh, that makes sense." And then you're like "But you can't picture that unless I set it on fire" and I am okay with that too, since this is the video I chose to click on

[@Jedidiah_Martin_2]

Mheheheh heheheheheh heheheh mheheheh fire is cool mheheheheheheh heheheh mheheh heheheheh

[@Bigbuddyandblue]

I am very familiar with the “rapid passing of gas”

[@loveasapologetics]

I came down immediately upon him saying that lol

[@petroshmo]

Ah.. a man of science, I see. 😂

[@nigesgamingchannel9699]

I laughed a lot harder at that than I should have 😊

[@first1nameknows396]

😌😏

[@banama1758]

boomer humor

[@zotzot5]

"Velve" -NightHawkinLight (2019)

[@michiganmitten1147]

Zot Fleischer This is how Michiganders say the word he lives in Michigan and I do too and this is how I speak

[@tonnymalero6316]

Also popular: Nukelar, Aluminum, ............

[@greenthizzle4]

Michigan Mitten you speak wrong, pronounce the word as it's spelled or you sound like an idiot

[@greenthizzle4]

Tonny Malero aluminum is correct, aluminium is wrong

[@tonnymalero6316]

@@greenthizzle4 I know :-P Murican language

[@PlayNowWorkLater]

Very cool video. You should definitely try a longer version to see how fast you can get the flame traveling. Also, would be great to see it in even slower slow motion. Maybe a collaboration with the Slo Mo Guys?

[@TrollFaceTheMan]

Fascinating, never heard of something like this. But makes sense.

[@TaroutCommodore]

I wonder if we can use this to control airflow inside a room or a building passively. Ancient people used holes and it worked well, but this is much better. Great video, love the good work 👍

[@absalomdraconis]

You could use this as the basis for architectural changes that would affect the flow of air, if that's what you meant.

[@deshyvin]

I'm imagining a upright auger as a windmill housed in a facility with these valves channeling air towards the fins.

[@stanislaviliev6305]

Nicola Tesla introduced the hole v2.0

[@alams3860]

Better view : Speed 0.25x and here's the time stamp: 5:21 - side by side comparison 2:40 - Reverse direction in valve 4:04 - forward in valve

[@maxxxpayne299]

Loved it, and the part where we realise that experimenting is all about trying new things and you using flame gave new insights and application made the core concept of experimentation even clearer

[@druidpapi]

Don't forget the most important part. Surface friction of the fluid at the hook of each fin creates additional flow down the main line causing repeated stuttering of the pressure which, depending on the angle of the fin, will inhibit or perpetuate the main line.

[@davem5308]

Blah!

[@Taolan8472]

which is why the fins are meant to be adjusted to the ideal angle for the desired performance of the main line in the intended medium.

[@droolingmonk]

What happens to sound? I'd like to know what happens when you speak in each direction through it. Great video!

[@David-bc4rh]

OHH its sure to have different pitches depending on the length. Experimenting with this would require some serious maths and/or some serious time-consuming trial and error with many different dimensions and designs

[@interestingiftrue8668]

hahaha playing back at .25 speed to see what is happening... the irony of hearing "rrrreeeeaaaallllyyyy qqqquuuuiiiicccckkkkllllyyyy" 😉

[@LegendBegins]

NightHawkInLight: Check out this really cool gas effect with fire! Also NightHawkInLight: Oh man, I can make a gun out of this.

[@ИванСнежков-з9й]

Actually I was wondering how this design would work in a silencer. I guess they already do something similar.

[@tykaboom0113]

(Plasma cannon)

[@ketsuekikumori9145]

@@ИванСнежков-з9й If you look up smarter every day silencer, Destin did a few slow mo shots of suppressors in action. I'm not an engineer but the idea is similar, the main difference, is that the first half of the tube is a big void and the second half is a "valve" setup. If I recall correctly, in the video, the suppressor company owner says that the reason for this half and half split is that you want to bleed as much of the energy of the gas as possible before it exits the gun and suppressor. The most effective way of doing that is just a giant void, but you would need extremely long/large tube to reach subsonic speeds. So they compromise, by have the gas work against itself in the second half. At the time, it was hard to tell how much that affected the gas without something like this in context.

[@Nuovoswiss]

MURICA

[@capman911]

​@@ИванСнежков-з9й I watched a similar video last year where the guy used water as a demonstration. Then it came to me on a suppressor design like this that would cancel out the noise of the gasses. But it would take a cnc machine to cut the parts out. Good thinking ​Иван Снежков.

[@yshrha10]

Who else read the title and thought this was a collaboration between Tesla car company and Valve game company? lol Concise, interesting, no gimmicks, no needless footage to extend view time and educational! This is what KZbin should exist for! Thank you for an amazing vid!

[@UnlucksMcGee]

Would've been nice to have a simple straight tube as a comparison to this valve.

[@commonnons3ns316]

No it wouldn't. A straight tube isn't a valve. It would be pointless. The demonstration was to show how the Tesla valve works by directional flow. An open flow or unrestricted flow, would be an uncontrolled flow. Valves are meant to control flow in one direction or another and/or increase or decrease pressure or volume of a fluid or gas in a conduit and/or a collection tank. An open conduit or vessel, simply allow a liquid or gas to flow freely and only be controlled by gravity or surrounding atmosphere. In other words... There is no comparison to be made unless your demonstration is on how a valve works in general. This demonstration is being made under the assumption that you already have basic knowledge of what valves are and what valves do.

[@kreynolds1123]

@@commonnons3ns316 not pointless. It would serve as a control to contrast with.

[@DreadX10]

@@commonnons3ns316 You just tried to convince the world that zero is useless as a number because it doesn't have a value (it contains nothing). The straight pipe flow would be interesting because of the acceleration of the flame-front by expansion of the burned gas compared to the somewhat constricted Tesla-valve.

[@theGreaterAwareness]

Yeah, a straight pipe would be awesome! it would be like having two cars race each other and then in another split screen we have a tub of fried chicken just so we know what the base level of context is....

[@NuclearHeadshot]

@@DreadX10 0 IS a value, null has no value.

[@n3v3rg01ngback]

“Is there anything propane cain’t do?” -Hank Hill

[@airborne2876]

Do I look like I know what a Tesla Valve is?!

[@kofola9145]

It cant kick your ass.

[@kofola9145]

@Gray Au Well, figuratively, but does it qualify literary?

[@Cr1st0ph]

A good barbecue

[@brucesweatman2146]

yeah, no pollution? it can never do that.

[@RonakDhakan]

High speed is not high enough and hence, the slow motion is not slow enough.

[@MajesticDiabetic]

23 Timestamps for the "velve" lovers out there! 0:21 0:24 0:29 0:37 0:49 0:52 1:05 1:24 1:31 1:37 1:43 1:50 1:59 2:17 2:53 3:36 4:22 4:30 4:42 4:50 4:57 5:05 5:16

[@benjamindavidovichwaals2899]

Thanks brother

[@cocospops9351]

Doing God's work

[@hellcrow539]

😆😆😆

[@xirenzhang9126]

🅱️e🅱️🅱️e

[@nuzlock4481]

Thanks *velve*

[@rustyscrapper]

I used to work for a company that needed liquid agitators to mix polymer with liquid sludge. The sludge was a homogeneous solution of water and solid particles. the polymer would bind the solid particles together and cause them to separate from the water and sink to the bottom. It was part of a water treatment process. An early stage that pulled all the solid particles out of the sludge. The polymer and sludge mixture needed time to mix before going to the next stage, which wasn't a big deal. The original design just had the mixture pumped through a series of 90 degree bends which created turbulence in the flow and mixed the solution on route in the hose. Then I discovered we didn't even need that most of the time if you purposely zig zagged the hose a bunch instead of having a straight shot. There were some projects that we had difficulty mixing the solution completely because the sludge was so thick it didn't mix enough even with a bunch of u bends and adding extra hoses and purposely creating an obstacle course of hoses up down all around giving it more time to mix. It still came out partially mixed. When I saw this design I immediately thought holy crap that's it! Force the flow backwards through that and it would create so much turbulence in the flow it would force the solution to mix for sure!

[@combativeThinker]

@rustyscrapper Propose it to your superiors.

[@Tricklarock]

I hope your 'used to work for...' is because you're at a higher intelligence level and have moved on to better shit?!!

[@BarthiArgento]

I'm curious about the result of your idea

[@squirrelbong]

there's also something called a mixed flow valve that has no moving parts as well.

[@Pyrichia]

You needed a static mixer. They're a short chunk of pipe you put inline with the flow, with a steel mixing unit inside that doesn't have any moving parts. For a given length, the mixer guarantees a certain amount of mixing. It's very simple and common in all sorts of industries. And they are far easier to clean than a Tesla valve. Your old company must not have had any sort of engineers on staff if they didn't know about static mixers.

[@somedude4805]

It is really interesting to see the flame front accelerate along it's path, whether it is moving forward with little resistance or around the fins and back out the way it came. I wonder what that would look like with a continuous supply of propane and materials that wouldn't be destroyed by it.

[@hambone9444]

The back-pressure would eventually work the flame back to the tank then...surprise!

[@lajoswinkler]

@@hambone9444 And then... nothing. Because there's nothing inside the tank that can combust on its own.

[@heartfang21]

i imagine you could get a more accurate representation of the gas travel by rigging up one of those smokers beekeepers use with some sort of small, handheld fan. and maybe a funnel for the end of the board. no risk of explosion, lower temperatures, and actual air flowing. But it was still a cool enough demonstration i clicked, watched, and commented, so...well done! thank you for sharing

[@stanleypeters5383]

Thanks for your complete description. I think, from the colour change,, that the back-returning tail from the Slow side is also igniting residual unburned propane.

[@mattoattacko]

This is legit one of the most interesting things I've learned this year. Comming in at the last second like a pro. Good stuff man.

[@johnnyj540]

Tesla had one hell of an imagination.

[@keith_dixon]

Everytime he says velve my eyes cut to the title.

[@Dresdentrumpet]

I didn't hear it till I read this. Now I can't stop hearing it

[@paparottzi]

This... totally did it. Looking at the comments solely for this comment. Thanks for not disappointing.

[@lllBAMlll]

I keep hearing bell.

[@flonker5961]

@@Dresdentrumpet and you never will.

[@eavyeavy2864]

Smartass.

[@regthebackyardjackofalltrades]

Thanks for this. I’m thinking about making an intake for my compressor box. I’ve thought about baffles with foam but I think this would work better when adding a flow fan that will be either inside or on the exhaust. I’m in the thought phase and tons of other projects but I would like your opinion.

[@brucearterbury1856]

I’m wondering if “compressor box” is: A. The intake for a shop air compressor B. The intake for a automobile engine with a turbocharger or supercharger Btw I am wondering if automobile exhaust pipe performance would be enhanced?

[@suit1337]

Everybody: just use a liquid with particles like glitter in it to visualize the valve NightHawkInLight: there is no other way to show it than using propane and ignite it :D

[@RR-uc1wb]

Destructive minds come up with explosive actions.

[@DehimVerveen]

Or run a model in a CFD program

[@thenaylor]

Or use smoke?

[@jotaro4874]

@@thenaylor it would work, but I prefer explosion

[@conorstewart2214]

@@DehimVerveen A program only uses models of how it thinks air should behave, the knowledge and formulas have to be known before CFD software can even be created, this is a much more reliable and concrete way of proving that it works rather than a computer doing what may or may not be the correct equations

[@zarodgaming1844]

"So i had the idea of filling it with propane ..." *"Everyone, GET DOWN!"* my brain when he said that xD

[@oddjobbobb]

I wonder if the reason for the speed increase in the “slow” direction when the flame flows down through the teardrop and back might be because of a vacuum effect. I’m thinking about what happens if you drop a lit piece of material into a jar and close and seal the top. The flame goes out as oxygen is consumed and a vacuum is created. Same as when you do any home canning, although that vacuum is more the result of expansion of hot liquids and the contraction as they cool. Very cool demonstration.

[@unsubme2157]

I never considered the flame making the vacuum, but i thought it was definitely a vacuum due to the air bypassing a hole and creating a low pressure. The same as how blowing across the top of a straw will draw liquid. Maybe a combination of the two? Idk but good suggestion

[@jklmnopski7421]

I thought it might be the Bernoulli Principle in effect, with those teardrop shapes acting as airfoils. Basically, air flows faster and at a lower pressure over the top of an airplane wing than the bottom, so that it can catch up with the rest of the air (the difference in pressure creates lift). Though I will agree, the idea of a vacuum caused by the flame depleting oxygen could definitely be a factor.

[@IonutTudorica]

I saw some guys using Tesla valve in simulations with water. Their conclusions were that it could stop a tsunami reaching a city. So, it could have lots of uses. Great video. I didn't think it could accelerate fluids the other way around. Thanx

[@theCodyReeder]

Nice!

[@Nighthawkinlight]

Thanks Cody! Loving the charcoal series.

[@kertanegara911]

Now both of you is here... 😄

[@peterwilson2143]

THANK YOU OMFG WHAT AN AMAZING IDEA!!!!

[@plotwist1066]

ey

[@jakeyaboi6824]

A fire front is different than a moving gas. This doesn’t show the way propane moves through the valve. It just shows the flames progressing.

[@somestuffithoughtyoumightl6985]

So he should have used liquid?

[@Headlock123456789]

Trace Trace He probably should have used steam or something like that. It still gives a good idea of how it works though.

[@williambarnes5023]

He should have blown colored smoke through it.

[@freebordwerm]

Only reason I scrolled through the comments was to see if someone had already mentioned this. Looks good but does not show the valve functioning at all.

[@davidlong3359]

I think you meant velve.

[@michaelscott-joynt3215]

Everyone out here obsessing over "velve" like they've never heard of dialects while all I could think of is supersonic flamethrowers by using this kind of velve.

[@joshuadalton6063]

Don't you mean suparsonic flemthrewors?

[@Eddy1A1]

Well ... technically speaking, the idea of this valve is to restrict the gas flow from a direction rather than accelerate it from the another. For a flamethrower, a straight pipe might be better in terms of gas speed after it's lit up. It's just my guess, correct me if I'm wrong.

[@jamesfair9751]

VertUnix straight pipe getting more narrow as you get closer to the fire end.

[@NoName-zn1sb]

Flammenwerfer!

[@NoName-zn1sb]

@David Robinson !!!

[@pcrengnr1]

Thx for taking the time to set this up and show the results. Ben the acceleration in the fwd direction was quite a surprise. Nicola actually meant for this to precede one of his turbines so that it could run on fuels. That article talked about when it was tuned the frequency was about 400 Hz. Wow what an inventor. Again, thx for the video.

[@AlejandroBelloRD]

The real Tesla was a gifted genius.

[@gappuma7883]

Alejandro Bello no shit Einstein

[@mast3rNate]

podak10 someone is having a tough life

[@gappuma7883]

Nathaniel Zamora or someone can’t get a joke

[@Rpearce79]

Versus the fake tesla?

[@mast3rNate]

podak10 i just don’t see the humor lmao.

[@dl7394]

velve

[@MrJUSTJONES205]

How to make a video to show how smart you are and mess it up with one word smh. It was annoying to hear

[@skylark4901]

Ha! I know right, that's foony

[@tonyppe]

Tesla velves

[@Kori114]

Exactly! I was afraid I was the only one who noticed.

[@sboloshis1188]

He needs to try it with two types of liquid. Aquavelve-a and aquavelve-b

[@John-ye9oc]

Wouldn't using a colored smoke be more accurate? It seems to me that this is just a test of the ignition acceleration of the propane rather than of the speed of the gas through the valve.

[@David-bc4rh]

Yes this is pulsed ignition acceleration. If we want to test out a sustained flow, i think it would be harder to see the acceleration. I wonder if the acceleration is only achieved with the continuous ignition.

[@Solnoric]

Well, that flame front is drawing air from the ignition side, which is why it travels like it does. Flames in tubes like this create a suction at the ignition point. Not a strong one but a distinct one.

[@David-bc4rh]

​@@Solnoric Lower pressure/higher velocity is the hallmark of the Venturi Effect. So the flame is lowering the pressure inside the valve behind the flame more and more the further it travels.

[@TheRonSeman]

First time I saw one of your videos. You are pleasant and smart and clear! It was a pleasure and I will check out other videos and I don’t mind watching commercials for a valuable resource like you! And Nikola is such a great subject as the greatest genius ever. Thanks.

[@-phenring-]

I'd love to see this with smoke or colored mist

[@sciencecompliance235]

Rachel Hoffmann Yeah, it would be nice to remove the nonlinearity that is combustion and just see pure flow.

[@jorgecelis8459]

I would have been much instructive on the properties of the valve and more beautiful

[@astroidyeti2169]

I agree I think smoke would have given a much better demonstration to show how the properties of this valve work.

[@chaostactics]

Rachel, great idea!

[@lukecope4212]

That was my first thought, someone who vapes would be ideal for blowing through this with a giant puff

[@bananajones9396]

I would be interested in seeing smoke pass through the valve

[@RebelDude989]

it would make more sense that way.. have smoke and a vacuum

[@BenDover-kk3xz]

I want to smoke out of it

Two things to mention: - schlieren imaging - tesla rocket motors

[@asdfasdf71865]

I am not sure if tesla rocket motor could ever be light enough for flying.

@@asdfasdf71865 what? I meant, instead of turbines, a tesla valve could be used as a burn chamber.

[@Methoverbitches]

Maybe as a vacuum optimized engine. But I’d go watch everyday astronauts video on areospikes. A bell nozzle engine is about as good as you can get. Especially the raptor full closed loop.

[@asdfasdf71865]

Aerospike engine came to my mind also. Just forgot the word.

[@Sgt.Hartman]

@@Methoverbitches but imagine a rocket engine with no moving parts. You could also use it to make extremely small engines, saving literally tons of weight.

[@TheRocknRolla84]

Man this is such an awesome experiment!! I could sit here and watch the side by side slow mo footage of this for hours haha! It's mesmerizing!

[@takvacs]

I learned two things today. Valve is velve. Tesla valves exist.

[@-NGC-6302-]

I can’t unhear it

[@dogipug5646]

Actually no, it's "valv" in both american and british english.

[@vicben1]

I'm glad I wasn't the only one!!! :)

[@versag3776]

Thank you

[@takvacs]

@@dogipug5646 sarcasm

[@speedlimit6869]

I didn’t know Tesla made a valve, he amazes me every time.

[@nothankyouYouTube420]

You know what ...frick you. A speed limit of 6869 would be irresponsible.

[@nothankyouYouTube420]

@Brick :(

[@jazldazl9193]

yes he was of the "Awesomes" with da Vinci and Einstein

[@Bigfoot_With_Internet_Access]

What if you explained fire with fire

[@discodrift2455]

Wow u are everywhere

[@KingLarbear]

Wow, from 3 years ago, what a treat. I'm enjoying this from a KZbin short. The crazy thing is that KZbin shorts didn't exist back then lol

[@akashmukherjee2405]

As from my class notes, I remember that the internal edges of the Tesla valves should be a little bit steeper. You can try that and see what's gonna happen Edit: sharper

[@bikemibby2216]

Tesla was truly a man ahead of his time

[@SerratedPVP]

Imagine what a car exhaust would sound like with this.

[@bruzote]

It depends on the direction it was installed!

[@krazytroutcatcher]

bruzote Yes, you need some back pressure, just not that much. I wonder what would happen if you run a high volume compressed air line the wrong way through the valve? 🗯🗯🗯🗯🗯🗯

[@anon_ninja]

Where would you need this? Or why?

[@sukubann]

u mean like tesla?

[@R3848]

It will go "Wooo-WOOOO"

[@danenson94]

Very interesting how with the actual knowledge and computational power, countless processes, machines, inventions, etc. can be made more efficient, and this one, even though it is old, is surprising that new applications continue to be found and how a mind from more than 100 years old, continues to contribute to current technology. Love and hugs from Mexico 🫂😃🇲🇽❤️

[@JimDoveMO]

very cool. I had never heard of a Tesla Valve. It's surprising just how smart that guy was.

[@GuiltyMelly]

Too bad he never got any of the recognition he deserves

[@JerrodFuller]

I am going to re-upload this video with the title "Edison Valve Explained With Fire" . . . (That was an obvious attempt at a joke and should not be taken seriously)

[@4jones82]

As long as they don't do one where they kill elephants to see how dangerous it is. Lol

[@dustinerickson1253]

hahaha.. might want to make sure its profitable first.

[@RSChris666]

@@4jones82 I thought it was a cow?

[@dustinerickson1253]

@@RSChris666 nope, elephant

[@benjaminweir4063]

I'd be interested to see how this would affect the flow rate of a fluid if done vertically and the fluid entered through the top!

[@michelleritscher5528]

I had the same question. Would this accelerate (or conversely regulate) the flow of a fluid?

[@paddlefaster]

I'm wondering the same thing. My feeling is that once it equalized it would remain constant no matter which way it went through the valve. I think it would be cool to shoot some colored water through there and see what happens.

[@SugarKalamay]

Exaxtly the point, the other side would flow smoothly, the other wouldn't considering the way it's structure is built

[@BulletproofSprunk]

Well air is fluid so you are referring to a liquid, the same rules should apply because liquids are fluid as well

[@MIS32264]

Watch 0:55 again. This valve only works because gassee that are lighter than air wants to travel upwards. Hence, when he runs the gas in opposite direction it gets trapped in the loop. This would not work for liquids as they are more dense than air.

[@AnnaelleD]

Excellent! Tesla was a genius and your intuition guided you to show his talent in a very clever way. Thank you for your excellent video.

[@frankh.3849]

Be interesting to see this concept implemented into a 2-stroke exhaust pipe Instead of an expansion chamber.

[@aSinisterKiid]

There is a company that has sorta gone that route, while not a 2-stroke exhaust pipe, but a supressor for a handgun.

[@frankh.3849]

@FuLLeFFekT1 yeah the Tesla valve has back pressure when used in reverse as we all saw in the video.

[@jkanclark]

Is a flame-front really a good analogue for the gas’ movement?

[@komack1]

No, I don't think so because the Tesla valve operates from disippating kinetic energy from a flow. A flame front is mostly independent of gas dynamic effects in this case. It sure does look pretty though

[@Pupsi]

It's honestly not. Water with glitter or colouring would do much better. Also doing this in a much smaller scale might exaggerate the effects.

[@ohctascooby2]

no gas movement and flame front are two different things.

[@NoName5589]

But is still clearly shows the effect the valve has does it not?

[@Pupsi]

@@NoName5589 The gas is expanding at a really high rate. It's literally spewing stuff backwards. There's no constant pressure from the inlet. The valve is based on momentum and friction affecting the flow from the inlet. There's no flow. It's equivalent to demonstrating the flow of a river with a burning fuse. There's no momentum in a burning fuse. There can't be resistance of momentum to the burning of a fuse. A boat on water?.... How can we demonstrate the friction of water on boats? Let's move a boat with EXPLOSIONS! YEAH!

[@samuelyoung2671]

I believe tesla valves were meant to restrict high frequency pulses, not as effective for continuos flow, so this test is actually quite amazing

[@rivergrrrl1256]

If used to restrict high frequency pulse could a shield for satalites be built with this idea?

[@rivergrrrl1256]

Oops only good for quick hits?

[@rivergrrrl1256]

@Sasha Kruse Grim hi, so tesla valves are used to help shield satalites? Could tesla valves also be used on solar sails the opposite way for propulsion?

[@TheWinezen]

Thank you for providing the stunning visuals for the experiment. It helps give me confidence in my future designs

[@tomislavseparovic1073]

Maybe a good way to demonstrate the flow throught the valve would be to flow water through it and add a little stream of colorant

[@jacobb5484]

The weight may distort it

[@messenger291]

@@jacobb5484 unless the valve were laid flat

[@max-jv3zz]

you could use water with glitter in it and let the water flow vertically in both directions vertically

[@MaksiZockt]

I don't think that would work. water is not compressible and the valve seems to work by using the ability of gases to compress

[@greenthizzle4]

Chris Russell he didn't make the buckets curve back enough, he also should have made the channels thinner.. this didn't actually work as a flashback arrestor which is what tesla designed it as

[@kengurusafari]

I love these! They get way too little attention!

[@MrQuestful]

I’d love to see this design shaped around a near circle and see how long it takes to exit, something like 350° of a circle with just enough room for you to get the torch in. Nice work!

[@richardrapka]

Or a full circle to see if it keeps building

[@ObeyCamp]

The only difference that would make would be in terms of the length of the valve. If the "end" of the valve isn't feeding back into the "start" of the valve, then only the length (or, rather, the number of baffles,) should have a real effect on the flow. What would affect the performance in the way I think you're imagining would be to make a complete circle, adding on some kind of one-way inlet and separate one-way outlet to allow flow to occur. What would ultimately affect the performance would be the fact that the portion of flow that's reaching the "end" of the valve is being fed, as much as possible, back into the "start" portion of the same circular channel. I'd be super interested to see how the flow would behave here though. That's a super interesting idea.

[@Dont_Gnaw_on_the_Kitty_1]

Or feed the output back into the input and start off the chain reaction. Would this be a perpetual motion machine?

[@lajoswinkler]

@@richardrapka Building on what? You don't understand how combustion works, do you?

[@lajoswinkler]

@@Dont_Gnaw_on_the_Kitty_1 It would not because it would stop.