- Видео 17
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Joe Ranalli
Добавлен 7 окт 2011
Видео
PSU Hn, Kines 077, Lecture 2
Просмотров 1449 лет назад
This video screencast was created with Doceri on an iPad. Doceri is free in the iTunes app store. Learn more at www.doceri.com
Lesson 6 - The Energy Equation
Просмотров 38 тыс.10 лет назад
Online lesson for EME 303 at Penn State Hazleton. This lesson follows the derivation of the Energy Equation for fluid mechanics using the Reynolds Transport Theorem. License: CC-BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0/)
Lesson 5 - Rotating Control Volumes
Просмотров 13 тыс.10 лет назад
Online lesson for EME 303 at Penn State Hazleton. This lesson follows the derivation of the form of the Reynolds Transport Theorem used for rotating Control Volumes. License: CC-BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0/)
Lesson 4 - Moving Control Volumes
Просмотров 20 тыс.10 лет назад
Online lesson for EME 303 at Penn State Hazleton. This lesson follows the derivation of the form of the Reynolds Transport Theorem used for moving Control Volumes. License: CC-BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0/)
Lesson 3 - Conservation of Momentum
Просмотров 28 тыс.10 лет назад
Online lesson for EME 303 at Penn State Hazleton. This lesson follows the derivation of the equations for Conservation of Momentum for an integral control volume. License: CC-BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0/)
Lesson 1 - The Reynolds Transport Theorem
Просмотров 129 тыс.10 лет назад
Lesson 1 - The Reynolds Transport Theorem
Loads of love from India!! <3 I have my fluid mechanics paper tomorrow; this is the best explanation of Reynold's transport theorem I found!! Thankyou soo much!
Good video 😊😊
You are awesome!
Excellent explanation 💯
the best explaination ive seen till date for Reynolds Transport Theorem.
Finally I found the best one. Thank you so much ❤
you kind sir, just saved my life.
Thanks for your video. It is very useful!
Very helpful, thank you!
Finally I understood what is this.... thanks for this wonderful explanation of yours ... really helpful 💯
this is videogamedunkey if he had a college degree in CFD lmao
If control volume analysis focuses on a FIXED region in space then how it is allowed to change its size?
It really just means that you're fixed to something that's independent of the flow. So perhaps the control volume is "all the water in a bath tub." The size of that control volume will increase and decrease along with the water level but the physical thing it represents remains fixed. In Into Thermo we would describe the difference most basically as: a system follows the same mass while a control volume allows mass to enter and leave to accommodate representation of some convenient device.
@@EME303HN ok. By now I have never encountered any case where the size of control volume changes. In fact I have seen some well known people in fluid mechanics area saying that the volume of a control volume region doesn't change ( that is why I asked about size and not shape). Thank you😊.
So good 👍best explanation sir 👏
11:43 CAT ALERT!!!
Thank you so much. It's really helpful. Soon I will be uploading a little more visualization based explanation of RTT based on what I learnt through your video. Thanks again.
Superb video...even guy without mechanical or civil background can understand
Good one
perfect!
Best 16.11 mins in my life as gas dynamics students....
You are a living legend. What is that nice font you used?
It was a custom handwriting font I made
This explains it all. Thank you!
Hi Joe, excellent explanation. Actually understood what was happening for once! Just a question, 11:18 was this supposed to be "Flow rate of B(out) of the CV, and not system? Thanks!
Yep that's right! Guess I was being a little careless with choice of words.
@@EME303HN Awesome. Thanks for clarifying :)
Great way to derivate this important theorem. Many thanks for sharing!
one of the best explanation.... thanks
6:42 "And you can probably see that we're going to get into calculus here". Bruh I can't even see a "d" in a word without thinking I'm about to be calcced
Good video, thanks! I imagined Badger from Breaking Bad teaching me fluid mechanics.
best explanatin loved it
MASSIVE thanks for this
11:43 A cat meows off in the distance
Thanks brilliant explanation
you are wonderful teacher, I love u!!!!
Thanks, man .u just cleared my years of doubt
best explanation!!!!!
best explanation yet... simple and effective! thanks
This is total common sense. Phrased lovingly.
Thanks a lot man.. U really helped for understanding the basics of my research
Than you so so so much. My native language is not English, so I find it trouble to understand what my prof said cause he spoke at a high speed. Now I understand!!!
You are my hero!!thanks alot!
Your explanation is awesome 😁😊
GREAT EXPLANATION THANKS!
The best explanation for reynolds transport theorem so far! Loved it!!!
great video prof, thanks a lot!
I wish i was in class. 😢. M from india we need teachers like you. We have really pathetic teachers here. Even in best universities.
Its a clear explanation thanks bro... Sub. And liked.
I'm still confused about the derivative parts. Why do we use material derivative for the B_sys? What I've learnt is this: For B_sys, it only got derived by time, not with position, so it can't be written as material derivative right? Why don't we use partial derivative notation here?
Hi Kevin, you have a valid point. The material derivative is not applicable to B_sys. The operator D/Dt can be applied only to field variables (like velocity, temperature, density etc) and not to variables associated with identifiable entities of mass. Hence, it is appropriate to use the operator d/dt for B_sys where B_sys = integral of (rho*b*dV) over the material volume. Also, please note that the volume integral corresponding to B_sys at 3:20 is an integral over a material volume whereas the volume integral corresponding to B_cv = integral of (rho*b*dV) is an integral over a volume which is a geometric entity (not associated with matter).
really wish you have videos for those problems at the end
it's to simple :(
Thank you very much for the great video! I still have same issues understanding the lagrangian idea. If we would talk about a solid material or one particle, I would totally understand it. But how is it possible for fluids, that the particles, that are considered at time t in the system volume are the same particles at time t +dt and are not mixed up with other particles. So basically the question is, how is it possible to follow a package of mass as it could could comprise of other particles a little time later?
One year later but I hope I can help. That's because of continuum hypothesis. The volume we have is big enough to keep particles inside it and small enough to measure the same quantities in every point. Besides of that, there's no mass crossing a system (or a volume of fluid) , so it can be deformed and its shape can be changed but it will still have the same particles. And because it can be deformed, in Fluid Mechanics it's much more useful to work with control volumes, which is completely defined by you in the sense of geometry, size and so on.
amazing explanation! Thanks a lot!!
Very good! Thanks