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 RUclips, VHS or any other medium, short, perfect illustrations, information reinforced several times, wow!!!!
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.
@@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. 😁😁
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.
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.
I've been supporting my engineering knowledge with a variety of educational RUclips channel since I started college and I have never seen such a extraordinary explanation of a engineering phenomenon. Impeccable!
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.
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.
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!
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!.
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.
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.
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.
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.
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.
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.
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.
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.
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. 😇😇
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.
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.
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!
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."
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.
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.
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.
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.
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.
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
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 RUclips, VHS or any other medium, short, perfect illustrations, information reinforced several times, wow!!!!
It's common knowledge. How do you miss a thing like that?
Plus, you learned how to pronounce wapor.
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.
@@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. 😁😁
@@dumbotater2158lmao that had me fucked up for a minute. I was like wtf is she saying wtf is waper
Wonderful presentation. Whoever wrote-directed this video is a brilliant teacher. Thank you for you sharing your time!
This is how I want every thing to be explained. Great video
Thank you! We are working on that;)...
I am engaged in the pump cavitation simulation study, look forward to more exchanges
excellent!
me too !
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.
I've been studying with youtube videos for years and I have never seen anything like this before! Superb explanation!
I am engaged in the pump cavitation simulation study, look forward to more exchanges .xzs528@163.com
Yes superb explanation!
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.
I've been supporting my engineering knowledge with a variety of educational RUclips channel since I started college and I have never seen such a extraordinary explanation of a engineering phenomenon. Impeccable!
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.
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.
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!
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!.
All universities should adopt this type of video tutorials for their students.
This is the best video on the internet regarding the cavitation.
thank you - IET
This video took me down a path of learning what cavitation was and how pumps work, very cool and interesting stuff!
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.
Perhaps the most intuitively explained video I ever watched!
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.
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.
This is quite possibly the best explanation video on the internet.Well done
Couldn't imagine this topic being explained any more clear. Thank you so much for this video
Wow!!!!! I've never seen any video with these many details. How can I not subscribe? Wonderful job. Thank you for sharing your wisdom.
Thank you very much for your subscription!
Can you thank me for my subscription too?
We're glad about every subscriber!
Even me?
This is without a doubt one of the best engineering and technology videos I have ever seen. Great job!
This video is among the best that explain things with accurate language, great experimental results, vivid simulation and actual samples. Thanks!
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.
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.
Really explained cavitation in a pretty simple way
This might be the best Fluid Mechanics video on RUclips. Keep up the good work.
This is one of the best explanation videos I've ever watched. Thanks for making this
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.
agreed!
This video was exactly what I was looking for. Great explanation with real life examples. Thank you very much!
in 35 years of experience , i understood the cavitation visualy today
thanks for sharing the same.
I was revisiting cavitation as a result of high frequency sound waves in a laminar flow environment. This video rocks.
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.
Wery good wideo.
xDDDDDD SO FUNNY. Not.
I am engaged in the pump cavitation simulation study, look forward to more exchanges
It is amazing to me that she can see all the other v's correctly but not vapor
Impressive how she was able to pronounce the 'v' in cavitation but not in vapour!
video ki spelling to likna sikh le
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.
I was just wanting a definition. I feel like a spent a week at MIT. Nice job
I didn't comprehend what is cavitation in only textbook. now I got it. thanks for nice video
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. 😇😇
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 ..
I can't believe it..! How can a video be this good? thank you so much for sharing
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.
Best video I've seen to explain cavitation, very detailed and clear
A great video. Explained every tiny bit in a very straight forward manner.
Thank you for your feedback! We appreciate that!
I wished they explained things like this in Engineering school. The video is detailed and well done.
Im not an english speaker, but this is the best video of cavitation that i ve ever seen. Great job 👍🏽
Can't find such Such detailed explanation in my reference book!! Hats off
Better explanation than we had at trade school - thank you!
wow this is very detailed. Professional AF, i couldn't understand everything but was helpful
The most detailed video on Cavitation I've seen till today, amazing job 🔥 🔥
Well explained, with authentic proof and comprehensive way.. thanks..
concept, explanation, graphics and examples. Thumbs up
the best explanation of cavitation I ever heard! congrats
Probably the best video in explaining cavitation..
This is the most through and fascinating video explanation I have ever seen on cavitation. Thank you for providing an easy to follow format.
Short & clear technical explanation. Thanks.
BY FAR THE BEST VIDEO I HAVE EVER SEEN WHICH EXPLAINED CAVITATION IN MOST AWSOME WAY......THANX AND PLS KEEP UPLOADING SUCH EDUCATIONAL VIDEOS
The best Video I've watched explaining cavitation. Commendable.
Footage of collapsing bubbles is amazing! Now I know face of my enemy.
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.
Best video ever about explaining cavitation!
Great explanation, good graphics, easy to understand. Well done
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!
I was not directly searching for this but I am really glad I watched it! Great video!
IzakGt maybe you are also looking for a source that builds Cavitation Heaters?
Detailed explanation leaving no questions! Great job
Great Video!!!! I am Physcs teacher and my students have truly enjoyed it. Thanks
Excellent illustration.
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."
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.
Amazing animation.
Even though I knew that, I was mesmerized by the presentation and watched till the end.
great video! explained the concept in such an awesome way that no text could do. thank you.
That was so great and complete with a lot of detailed information.
New to the process control industry and this is a great video. Thank you so much for sharing this!
Can’t be explained better than this ... just awesome
perfect! i have seen many videos of fluid but i hv never seen such kind of video. its perfect... thanks for the video
Thanks. Very good video. You explain cavitation as easy as possible.
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.
Thank you for your input!
Tear drip shape = phi : 1.
Phenomenal video! Great job explaining with these awesome visualizations.
Really awesome explanation mam I had doubts on cavitation topic for very long time now it has been cleared
Very good video. I wish everything could be explained so plainly.
Wonderful video and animation. The concept has been explained with great clarity. Thank you!
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.
the best way a topic can be explained.
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!
Love the woice over 🤣🤣
very good explanation.. in very simple way n straight forward manner.. thnku so much
Amazing video . Thanks for sharing knowledge
That is indeed easily explained! Thank you!
Explained in simple language with slow motion animation and with examples makes easier to understand.
Absolutely incredible work. One of the best educational videos I've ever seen.
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.
Great video! very clear explanation of cavitation !!
I could watch this all day! Good job guys, and thank you very much.
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.
Really amazing and shows microscopic view of how the bubbles could be a source of damage by rapid water jet
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
Great video. Now I understand how cavitation occurs.
this is an exceptionally well put together video....the animations and pictures, and explanations are awesome
This is great, helped me understand a big problem. Thanks!
First class explanation. very impressive presentation
Absolutely incredible work. One of the best educational videos I've ever seen
same
Amazing , Excellent, and detailed and easily explained
Excellent video graphics and explanation...It would have been nice to make mention of the light emitted during some cavitation events.
Wonderfully presented! Great explanation!! 👏👏