adjoint-based optimization
10:23
4 жыл бұрын
Aside: Boundary Layer Separation
15:11
Aside: Boundary Layers
7:42
9 жыл бұрын
Viscosity and irreversibility
7:38
9 жыл бұрын
Worked example: point source in 2D
10:43
Worked example: flow over a river bed
10:35
Aside: Euler's equation
6:56
9 жыл бұрын
Aside: The material derivative
11:58
9 жыл бұрын
Aside: Equations of State
5:41
9 жыл бұрын
Aside: The Del operator
18:55
9 жыл бұрын
Aside: Particles vs fields
3:24
9 жыл бұрын
8.9 Relevance of inviscid flow
4:15
9 жыл бұрын
8.6 Drag reduction - streamlining
6:13
Пікірлер
@henryford2785
@henryford2785 Ай бұрын
excellent video! Thank you!
@cleisonarmandomanriqueagui7502
@cleisonarmandomanriqueagui7502 Ай бұрын
Amazing , the top level of understanding . intuition
@aerodynamico6427
@aerodynamico6427 2 ай бұрын
He says corrects himself four times: at 11:58, 13:23, 13:55, and 14:12 (confused between back of the wing and tip) and says "I'm sorry" thrice after mixing up stagnation and separation. He's drunk!
@Dragonson575
@Dragonson575 3 ай бұрын
At 2:02 you mentioned that tau only varies in the y direction, yet you wrote that d(tau)/d(y) is equal to zero. Isn't that contradictory?
@engineer.paulmusyoka
@engineer.paulmusyoka 4 ай бұрын
If y=H then...
@comment8767
@comment8767 4 ай бұрын
We don't have any punts in the US.
@samr2263
@samr2263 4 ай бұрын
4:42 so the convective part is independant of time, is that correct ? Is it as if it was "moving" accross space at a certain point in time kept constant ?
@zhenccc
@zhenccc 5 ай бұрын
this is explained so clearly!
@pragyabrattripathi6278
@pragyabrattripathi6278 7 ай бұрын
Great Sir...
@sam19022004
@sam19022004 8 ай бұрын
Only great explain of fluid mechanics I can find in the internet
@goodgood_study
@goodgood_study 10 ай бұрын
i'm writing the report for 3A1!! Really thanks for your help!
@user-vz9ns4oh6w
@user-vz9ns4oh6w 10 ай бұрын
2:46 here you mean there is no pressure gradient along x direction ? or you mistakenly written partial wrt y as pratial wrt x
@aflofo
@aflofo 11 ай бұрын
This is probably the most comprehensive explanation of how adjoint optimizations work. Everyone else wants to jump right into the math without giving a good intuitive understanding about what is going on first.
@lonewolfgaming5245
@lonewolfgaming5245 11 ай бұрын
Thanks for the explanation. But can you tell what does it mean physically when the flow is irrotational that we are able to apply Bernoullis eqn accross stream lines. Also why is stagnation pressure uniform? Does it mean the static pressure component will adjust itself with velocity variations along the flow?
@r2k314
@r2k314 Жыл бұрын
I can tell from your elegant explanations that you have a deep understanding of fluid dynamics. Excuse my stupid question, but I am trying to develop an intuition for the subject. I don't understand how V1 an equal V3 if there is a static pressure loss? Thank you.
@r2k314
@r2k314 Жыл бұрын
I'm sorry I mean stagnation pressure drop.
@r2k314
@r2k314 Жыл бұрын
where does the force comes in if momentum is conserved between layers?
@avyakth7995
@avyakth7995 Жыл бұрын
0:48 why you used volume instead of area
@avyakth7995
@avyakth7995 Жыл бұрын
sir ,could you please suggest reference book for this derivation
@learnfluidmechanics4166
@learnfluidmechanics4166 Жыл бұрын
Feynman's Lectures on Physics contains this derivation
@akinyilmaz99
@akinyilmaz99 Жыл бұрын
Thanks for simple explanations.
@Azch20
@Azch20 Жыл бұрын
How to study the accuracy and uncertainty of this Vortex speeding meter
@ObeyRoastMan
@ObeyRoastMan Жыл бұрын
What types of fluid is this valid for? Liquids sure, but gasses?
@learnfluidmechanics4166
@learnfluidmechanics4166 Жыл бұрын
It is valid for liquids and gases
@AJ-kv4ui
@AJ-kv4ui Жыл бұрын
great explanation!
@alimozaffar6884
@alimozaffar6884 Жыл бұрын
how a good lecture!! thanks alot
@cvspvr
@cvspvr Жыл бұрын
why do we use the reynold's number? it seems like an arbitrary simplification that should be the result of the calculations rather than be used by the calculations
@davidaugustofc2574
@davidaugustofc2574 Жыл бұрын
Reynold's number is used to know if we can compare 2 simulations/validation tests. The lower the number the more dependent on viscosity the flow is. Since similar numbers have similar characteristics you can use much smaller scale models to check if the simulations are accurate (as long as the numbers are similar)
@mther123
@mther123 Жыл бұрын
Excellent video
@mther123
@mther123 Жыл бұрын
Excellent another video
@mther123
@mther123 Жыл бұрын
Excellent video
@yonnileung
@yonnileung Жыл бұрын
No more War!!!
@SelmanBaysal
@SelmanBaysal 2 жыл бұрын
Many thanks for the great videos explaining essential processes and concepts simply!
@qr-ec8vd
@qr-ec8vd 2 жыл бұрын
this is just analytical partial derivations, right?
@TheAFWWA
@TheAFWWA 2 жыл бұрын
The fact that the concept is explained so well within 4 mins is amazing. Thanks a lot for these videos
@diegoandrade3912
@diegoandrade3912 2 жыл бұрын
what a tremendous explanation!
@lightspd714
@lightspd714 2 жыл бұрын
Thanks for the helpful video. Just to clear up for the case where we apply Bernoulli along a streamline where you dot the equation with v. Would omega cross v be zero without dotting it with v? If so, then it seems the omega cross v term is always zero- which would seem to trivialize the condition of requiring zero vorticity. Thanks for the content!
@learnfluidmechanics4166
@learnfluidmechanics4166 2 жыл бұрын
No, omega cross v is, in general, not zero.
@lightspd714
@lightspd714 2 жыл бұрын
@@learnfluidmechanics4166 Thank you very much. I really appreciate this video. It is the only video to clear everything up regarding Bernoulli’s equation and use cases for me.
@MosesAndruart
@MosesAndruart 2 жыл бұрын
Excellent explanation. Rich in details, yet very brief. This is how every teacher should be. Thank you.
@paulopucca1323
@paulopucca1323 2 жыл бұрын
Dear Professor! Excellent video! Thank you.
@dheyaalgallaf6060
@dheyaalgallaf6060 2 жыл бұрын
Any similar explaination for gas's orifice?
@gregoryaldebert2993
@gregoryaldebert2993 2 жыл бұрын
I like your channel. Thank you very much !
@xyrildanmanuel783
@xyrildanmanuel783 2 жыл бұрын
9:33 "...coated in condensed milk.... of all things" some small and quick humor right there
@sechristen
@sechristen 2 жыл бұрын
I'm confused about why it's more efficient to solve for how the lyft/drag changes with respect to each flow variable. Are you solving a PDE for each flow variable? Or does it have something to do with how you evaluate the lift/drag from the flow variables? Thank you! Lovely explanation of concept.
@Arthanzar
@Arthanzar 3 жыл бұрын
Are you confusing height with altitude? They are completely different.
@alitabarzadi3137
@alitabarzadi3137 3 жыл бұрын
Thank you.
@HeavY808
@HeavY808 3 жыл бұрын
Thank you! Super useful video
@rafaeltannenberg7403
@rafaeltannenberg7403 3 жыл бұрын
Thanks for the very good explanation! Would it be possible to compute the derivatives directly for the lift/drag-ratio rather then doing it independently for the two quantities? I assume that would reduce the required computational effort further (by the cost of one foward function evaluation)?
@learnfluidmechanics4166
@learnfluidmechanics4166 3 жыл бұрын
Yes it would. Indeed this would be quicker and cheaper.
@rafaeltannenberg7403
@rafaeltannenberg7403 3 жыл бұрын
@@learnfluidmechanics4166 Thank you for the quick response!
@giuseppe654
@giuseppe654 3 жыл бұрын
you explain things ver well. In university, there is a lot of confusion between separation and turbolence
@Gorusuur
@Gorusuur 3 жыл бұрын
Great explanation
@HaoJingChangZai
@HaoJingChangZai 3 жыл бұрын
Thank you very much this is the best theoretical and engineering-practical explanation I've come across online.
@ShioChannel
@ShioChannel 3 жыл бұрын
May i know what is the name of the equation? and is there any book show the above equation?
@Rolandus42
@Rolandus42 3 жыл бұрын
Boring teaching/lecturing.
@muhammadessaabubakar7962
@muhammadessaabubakar7962 3 жыл бұрын
Thanks!
@idiosinkrazijske.rutine
@idiosinkrazijske.rutine 3 жыл бұрын
Very nice explanation indeed.