Cavitation - Easily explained!

[@letsgiveall]

Wonderful presentation. Whoever wrote-directed this video is a brilliant teacher. Thank you for you sharing your time!

[@vekk1138]

I'm 45 years old, an engineer (computer systems) and I just now learned that pressure has an effect on the state of a liquid, I definitely was never into materials science or chemistry, but how did I miss this??? Simply put, this is the best learning video I have ever seen, on KZbin, VHS or any other medium, short, perfect illustrations, information reinforced several times, wow!!!!

[@PoorMansChemist]

It's common knowledge. How do you miss a thing like that?

[@dumbotater2158]

Plus, you learned how to pronounce wapor.

[@clarencegreen3071]

A saying by physicists about engineers: "They're so narrow-minded that if you turn them sideways, their minds disappear." Yes, it's a bit arrogant. Engineers might respond, "Physicists are jacks of all trades and masters of none." This is admittedly true, at least at the undergraduate level.

[@PoorMansChemist]

@@clarencegreen3071 You sound like me talking about biologists. Biology, the science that anyone can master if they can memorize things. It doesn't take actual intelligence just a good grasp of mnemonics. 😁😁

[@xmoopx2498]

​@@dumbotater2158lmao that had me fucked up for a minute. I was like wtf is she saying wtf is waper

[@m.a.4794]

This is how I want every thing to be explained. Great video

[@energy-tech]

Thank you! We are working on that;)...

[@mountaingrazie3206]

I am engaged in the pump cavitation simulation study, look forward to more exchanges

[@kudzaiwadotiona8792]

excellent!

[@hardcoregaming2090]

me too !

[@mundymorningreport3137]

Delusional science. Fails to explain the plasma spark. Does not detail the actual turbulance of the impellers. Does not mention the fact that the bubbles remain in gas for up to five atmospheres.. Does not explain the diamagnetic properties of the gas; a magnetized impeller would not pit. The obviously whack explanation of the bubble collapse. If the bubble is collapsing from a pressure increase externally driven, it would not collapse from one side. It makes more sense to see that an increase in pressure is causing the bobbles to condense. The collapse happens from the central point of highest pressure. This causes a release of plasma energy delaying the collapse, shaping the torus, disrupting the sphere. The gas has been analyzed. It is made of clumps of water ions and radicals. The gas will dissasemble the atoms of the impellers. You will not find any flake in the fluid. Make a cavitator, collect the gas. It burns like natural gas whit more applications and no pollution.

[@rhinobridge]

I've been studying with youtube videos for years and I have never seen anything like this before! Superb explanation!

[@mountaingrazie3206]

I am engaged in the pump cavitation simulation study, look forward to more exchanges [e-mail]

[@Official_Bengali_Tune]

Yes superb explanation!

[@yakupgumustas5229]

I've been supporting my engineering knowledge with a variety of educational KZbin channel since I started college and I have never seen such a extraordinary explanation of a engineering phenomenon. Impeccable!

[@josemiguelriosperez4587]

I needed a video in order to remember all I have studied in my B.Sc. about cavitation, and this was amazing. Congratulations, and thank you all that have participated in the development of this video!

[@zainahmed1994]

One of the best cavitation videos!! When pressure drops bubbles form when pressure gets back the same bubbles collapse. This collapse of buubles is accompanied by high velocity jets that cause erosion.

[@rich1051414]

Correct. The low pressure in the bubble causes the high pressure water behind it to accelerate through it at high velocity, which cuts the bubble into a donut and gets shot out the other side at extreme speed.

[@pratikpatel1784]

This is the best video on the internet regarding the cavitation. thank you - IET

[@anantashrestha296]

Where would have been the world if everyone is taught at school in this way.....Thank you everyone in the team for making efforts to create such a wonderful illustration. Keep educating.

[@jameserayburn]

This is without a doubt one of the best engineering and technology videos I have ever seen. Great job!

[@lalluyoutub]

Wow!!!!! I've never seen any video with these many details. How can I not subscribe? Wonderful job. Thank you for sharing your wisdom.

[@energy-tech]

Thank you very much for your subscription!

[@donperegrine922]

Can you thank me for my subscription too?

[@energy-tech]

We're glad about every subscriber!

[@zyxwvutsrqponmlkh]

Even me?

[@contessa.adella]

Wayper pressure! Loved this vid....first time I have seen the bubble collapse in detail and the micro jet it emits....fascinating. Thank you😀 I realise the bubbles forming against a surface can only collapse from the exposed side, so the resulting micro jet must always be directed at that surface. Bubbles collapsing totally surrounded by fluid will jet in random directions.

[@mehmetturkezer5165]

Simply the best cavitation animation. I have been working on this topic for a while and this video made me understood now very well. Thanks for the effort.

[@AuroraClair]

This video was exactly what I was looking for. Great explanation with real life examples. Thank you very much!

[@Nilanjan35]

All universities should adopt this type of video tutorials for their students.

[@yuxiangswjtu]

This video is among the best that explain things with accurate language, great experimental results, vivid simulation and actual samples. Thanks!

[@pralhadharibal7511]

in 35 years of experience , i understood the cavitation visualy today thanks for sharing the same.

[@amizan8653]

Couldn't imagine this topic being explained any more clear. Thank you so much for this video

[@laurencium19]

it was 7 years ago and I only watched it today and still amazed by it. I just know cavitation as bubbles formation. This is very helpful on my thesis for kaplan turbine. Thank you!.

[@respectablebogan3276]

This is quite possibly the best explanation video on the internet.Well done

[@pruthveshmandle4978]

Best video on cavitation. A tought concept explained with utmost simplicity with animation. Can we just appreciate the real sounds of experimental cavitation bubble implosions attached to the animations? Superb work. Thank you.

[@johnnyrocket4357]

agreed!

[@MrYashmohta]

wow really this is how our education system must be taking a topic and explaining from its fundamental origin to the practical problems really appreciate it great work people responsible for the making of the video.

[@navodeepdeka1042]

This might be the best Fluid Mechanics video on KZbin. Keep up the good work.

[@Vsmechanical_llc]

I have had some noise in my boiler for the past weeks,so i decided to look for a vídeo that explains something about it. Now i came across this video that explains how simple bubbles can destroy a whole system.what amazing video to watch,thanks.

[@Shadow-it7wq]

Omg, it cleared everything. I had so many doubts before watching this video. You saved my time which I could waste by wandering on internet for answers. Thanks to creators wherever you are whoever you are. 😇😇

[@ayushgupta5061]

BY FAR THE BEST VIDEO I HAVE EVER SEEN WHICH EXPLAINED CAVITATION IN MOST AWSOME WAY......THANX AND PLS KEEP UPLOADING SUCH EDUCATIONAL VIDEOS

[@smartstudypoint6369]

I'm studying by youtube from last 3 years , but this type of explained (very good than expectation ) video I never watched.. thanks to the team ..

[@nickpaine]

I was just wanting a definition. I feel like a spent a week at MIT. Nice job

[@salmanahmed3419]

A great video. Explained every tiny bit in a very straight forward manner.

[@energy-tech]

Thank you for your feedback! We appreciate that!

[@AceSeptre]

Wery good wideo.

[@chrisb4726]

xDDDDDD SO FUNNY. Not.

[@mountaingrazie3206]

I am engaged in the pump cavitation simulation study, look forward to more exchanges

[@ericprobinson]

It is amazing to me that she can see all the other v's correctly but not vapor

[@TiberiusStorm]

Impressive how she was able to pronounce the 'v' in cavitation but not in vapour!

[@aswani4085]

video ki spelling to likna sikh le

[@allensparksjr1543]

Perhaps the most intuitively explained video I ever watched!

[@brettmacan6957]

I was revisiting cavitation as a result of high frequency sound waves in a laminar flow environment. This video rocks.

[@163reasonswhyrealestateage4]

This is the most through and fascinating video explanation I have ever seen on cavitation. Thank you for providing an easy to follow format.

[@vanvo8436]

This video explains really clearly about cavitation I have ever watched. When I was young I watched a video about cavitation bubble occur on blades of the submarine, the noise has exposed the submarine. However, I don't understand clearly until watching this video. Thank you very much.

[@acenikkoyao1022]

Subscribed! Amazing video! Very comprehensive and easy to understand! Keep up the good job! I really hope you upload English versions of the other videos you uploaded in your E-learning in Thermodynamics and Fluid Dynamics playlists. Such amazingly crafted videos must be shared to the rest of the world! (plus I'm dying to see and learn from those videos myself!) More power to you!

[@rushikeshchavan2196]

The most detailed video on Cavitation I've seen till today, amazing job 🔥 🔥

[@blancaroca8786]

Excellent and clear. Super attention to images and video demonstrations and slow motion real camera work. So much better educationally than looking for long time at some face talking. A couple of questions: Video says “evaporation” occurs only above 100 C at 1atmos, Maybe shouldn’t we call it “boiling” or “vaporization” to distinguish from evaporation? The latter term evaporation is generally used for what happens well below 100 when your wet clothes dry out for example. Also just to let people know.. boiling needs “prompting” or seed points usually. It is so easy to superheat water in a kitchen microwave making a cup of coffee, throw in a spoon of coffee powder and see instant boil rather than instant coffee and often dangerously ejected. Reason for antibump granules in chemistry when heating liquids in test tubes.

[@heiheihei60]

Best video I've seen to explain cavitation, very detailed and clear

[@Limeayy]

wow this is very detailed. Professional AF, i couldn't understand everything but was helpful

[@Sam69190]

Im not an english speaker, but this is the best video of cavitation that i ve ever seen. Great job 👍🏽

[@adamhaziqsalleh]

This is one of the best explanation videos I've ever watched. Thanks for making this

[@michaelgonzales-smith9714]

Agreed, very good video. On a side note, cavitation is f-ing cool. I've know about it for a while but never bothered to the physics of it. Makes total sense. And the shape of the collapsing bubble and the micro jet. I haven't been this excited learning about something like this in a while.

[@zdiehl1]

This video took me down a path of learning what cavitation was and how pumps work, very cool and interesting stuff!

[@AA-xe1gg]

I can't believe it..! How can a video be this good? thank you so much for sharing

[@IzakGt]

I was not directly searching for this but I am really glad I watched it! Great video!

[@grantshort]

IzakGt maybe you are also looking for a source that builds Cavitation Heaters?

[@LuLi-q6w]

Really explained cavitation in a pretty simple way

[@marcomerli1715]

Great Video!!!! I am Physcs teacher and my students have truly enjoyed it. Thanks

[@christully1190]

New to the process control industry and this is a great video. Thank you so much for sharing this!

[@HoduSSi]

I didn't comprehend what is cavitation in only textbook. now I got it. thanks for nice video

[@sanjayamunindradasa5339]

The best Video I've watched explaining cavitation. Commendable.

[@JR-gy1lh]

Phenomenal video! Great job explaining with these awesome visualizations.

[@arthouston7361]

The only improvement I would make to the visual presentation would be to correct the blurry text images and re-load the video to the site. The letter "V" is always pronounced as it is in "victory," rather than as a W, in "welcome." The narrator is saying "wapor," instead of "vapor." This is a common affectation of native Russian speakers as they learn English. An example is Pavel Chekov in the Star Trek movie that featured Anton Yelchin, as he tries to enter a code word containing the letter "v," saying, "wicktor" instead of "victor," which is the phonetic version of "v."

[@Cg23sailor]

Actually it is not a common affectation of Russian Speakers. In fact, I know of no other language that uses the letter V more than Russian. Almost as though it is mandatory to throw a random V in every other word. The issue is that Chekov's "Russian" accent is fake. Or do you intend to claim that Russians pronounce things such as Wadka, Wadiwostok, Wadimir Putin, Iwan Roginow, etc... LMAO! Ummm NO.

[@prime2d958]

So correct me if I'm wrong, if u were to take a low pressured water hose like the one you use to clean your car with & bubbles form (from low pressure), when the bubbles hit your cars surface will it have the possibility to create micro damage when the bubble implodes (hypothetically speaking)? Just trying to create a example that's simple to wrap my head around, though I think I understand the lesson, creating my own example and double checking if its correct ensures I understand the assignment. Also, anytime you see water in air bubble form is that considered a cavitation bubble? I apologize ahead of time if I'm way off base here, just trying to put things into perspective.

[@rishijai]

I wished they explained things like this in Engineering school. The video is detailed and well done.

[@caryturangan9637]

Great video! The only visualization that may be not so accurate is the shape of the "toroidal bubble" when the bubble collapses near a wall. The cross section of the bubble must not be so perfectly circular. This is because the asymmetry of the collapsing bubble will produce a cross-sectional shape similar to a tear drop. The maximum damage caused by the bubble jetting is when the bubble is attached to or located very close to the wall. Otherwise, the water layer separating the bubble from the wall will dampen the jet impingement. The shock (or rather the blast wave) from the high speed jet hitting the opposite side of the bubble surface will also add to the total load on the solid wall (to cause damage) associated with the collapse of the bubble.

[@energy-tech]

Thank you for your input!

[@gyro5d]

Tear drip shape = phi : 1.

[@Amil1173]

Excellent illustration.

[@illfatedgoodheart4951]

Probably the best video in explaining cavitation..

[@ginaanddenes9059]

Better explanation than we had at trade school - thank you!

[@tpmvalves5721]

the best explanation of cavitation I ever heard! congrats

[@wjackstl]

this is an exceptionally well put together video....the animations and pictures, and explanations are awesome

[@KateDeFacto]

EXCELLENT video - fantastic description for someone who doesn't have a background in fluid mechanics. I echo another comment that this is how all scientific concepts should be explained, with one exception. The only thing that would be better is to move the visual examples of cavitation at the end of the video at the beginning -- and THEN explain how it happens.... Also possibly do a graphic to show explain visually the change from liquid to gas rather than the phase diagrams at the beginning... But I really liked this.

[@jaypbe3651]

Absolutely incredible work. One of the best educational videos I've ever seen.

[@mohammadal-hindi6860]

really thank you from all of my heart this is the best explanation method ever my graduation project defense still after 2 months and i have already known what to present

[@MaverickSu-35]

One mistake in the video: Evaporation doesn't occur only above 100C as said. Evaporation and it's rate is a function of temperature between 0C to 100C. Good video with many details of effects in the end.

[@tirnom]

Footage of collapsing bubbles is amazing! Now I know face of my enemy.

[@Fungineers]

I could watch this all day! Good job guys, and thank you very much.

[@persephone2706]

How can she pronounce _cavitation_ correctly but not _vapour?_

[@salehhassan9524]

Best video ever about explaining cavitation!

[@carmelpule6954]

Looking at the impeller at 08:42 it is clear that the designer needs to modify the inner design of the impeller as the entry of the water in that centrifugal pump is not correct at the right angle of attack with respect to the blades. From what I can see , the blades part at the centre is dealing with effectively water coming straight at the blade with no radial velocity and this will definitely cause circulation as in a sudden expansion in pipes which rotates the water behind the blade to cause the wear shown in the second diagram. What that impeller needs is for the central part of the blades to have an axial pump or an axial turbine blade to cater for the incoming water axial to the shaft of the pump, before the water is given a radial component when the radial velocity in a centrifugal pump is fine to deal with. perhaps they should copy the design of the compressor in a turbo engine where the start of the blade is partially an axial compressor interlaced with a centrifugal compressor. The pump manufacturer should have seen this before as most high pressure pumps do have a feeder pump ahead of it, including the old diesel pumps in trucks. It is never easy to change pressure in a liquid over a small distance.

[@myrsinipapaioannou53]

Detailed explanation leaving no questions! Great job

[@aumjoshi7847]

Can’t be explained better than this ... just awesome

[@jellybeans8810]

Can't find such Such detailed explanation in my reference book!! Hats off

[@tibortabori9745]

Absolutely incredible work. One of the best educational videos I've ever seen same

[@Amodia]

This video is amazing! The way it's all explained makes it clear and easy to learn.

[@harshit7123]

perfect! i have seen many videos of fluid but i hv never seen such kind of video. its perfect... thanks for the video

[@Roger7137]

Oh Gosh! So amazing this video. This is how every thing could to be well explained. wow, much better than Hollywood - Thank you so much!

[@kashishmalhotra221]

This is one of the most amazing video for explanation iv'e ever watched. Damn nice

[@SuperbikeSurgeryTV]

Love the woice over 🤣🤣

[@primaryschoolkids1757]

concept, explanation, graphics and examples. Thumbs up

[@nargesnaimi2696]

great video! explained the concept in such an awesome way that no text could do. thank you.

[@pooriashams]

Amazing animation. Even though I knew that, I was mesmerized by the presentation and watched till the end.

[@malcolmorrall8338]

Thanks so much for this, great explanation. I’m interested in the geological phenomenon of cavitation in rivers as one way rocks get broken down. Very helpful.

[@philfrydman2576]

Short & clear technical explanation. Thanks.

[@riyasv7971]

Well explained, with authentic proof and comprehensive way.. thanks..

[@CharlyBown77]

Thank you guys for your comments, as I am not a native english speaker I was not able to understand what she was saying. Now I know she was saying vapor. Great video though

[@shruthiramakrishnan3910]

Wonderful video and animation. The concept has been explained with great clarity. Thank you!

[@ericsherwood160]

Im so impressed with this video. I was skeptical at first but DAMN. Thank you.

[@saravanakumar6247]

Really awesome explanation mam I had doubts on cavitation topic for very long time now it has been cleared

[@manishmohan6862]

the best way a topic can be explained.

[@Chris.Davies]

6:53 - A slight correction. Water vapour *can* be many thousands of times larger than the water it was, but not always. The minimum expansion ratio is ~1600:1 when vapour forms from water. But the ratio is only limited by the energy put into the system until such time as a black hole forms. :P See: the Planck Length.

[@WantedReward93]

thank you for this wonderful explanation!

[@saidrhouzlane209]

Thanks. Very good video. You explain cavitation as easy as possible.

[@antonygomez3247]

Very very good. It's one of the best videos I've ever seen.

[@farzadk.2633]

This is a great video. Thank you for sharing this knowledge.

[@avcaballero2182]

Great video. Now I understand how cavitation occurs.

[@siva4067]

First class explanation. very impressive presentation

[@MS-be9wv]

Really amazing and shows microscopic view of how the bubbles could be a source of damage by rapid water jet

[@michaelcampbell8023]

Great explanation, good graphics, easy to understand. Well done

[@jordanavh]

Great and clear video about cavitation.

[@jhogan1960]

Very good video. I wish everything could be explained so plainly.