Physics 34 Fluid Dynamics (1 of 24) Viscosity & Fluid Flow: Introduction
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- Опубліковано 11 вер 2024
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In this video I will introduce viscosity and fluid flow involving frictional forces between the molecules and the containing walls.
Next video in this series can be seen at:
• Physics 34 Fluid Dyna...
you are the great teacher i've ever met!
Wow, thanks! Glad you like our videos! 🙂
I have done with my physics courses but I miss listening to your teaching style!
very good explanation. pen drop included! easy to follow. ty for this :)
your voice is nice to listen to and one can feel the enthusiasm you are teaching this.
you are really good teacher !!!
Great job!!!
“If you can't explain it to a six year old, you don't understand it yourself.”
― Albert Einstein
You are exatly revising my this concept which my teacher taught me in class. great sir
Modifications in physics i always like
What you learned in class should be the same as on these videos.
@@MichelvanBiezen it's not what I meant , i was just saying that I found it very crisp and to the point video not that much theory for my revision
Glad you find the videos useful. 🙂
Great lecture! wll presented, easy to understand!
Thank you. Glad you found our videos. 🙂
a great lecture.Tomorrow, I have a fluid mechanics exam, and I understood all the topics.Thank you, sir.
Aw! Love these and your bow tie! Thanks for the educational tutorial :)
Glad you like them!
Thank you so much! Love all your videos!
waw amazing explanation thank you very much
Great. Thank you!
Glad it was helpful!
This list of complete correct? It is just not numbered correctly. Am I right?....I loved the practical application at the end.
Really salute you for your efforts on those lectures.
Please explain why are we using friction (Mu) coefficient when we are in fluid dynamics? I think viscosity (Eta) is the right use. I love your videos.
awesome! excellent professor!
hey Mr michel hope u are fine thank u so much for every video u uploaded on ur channel i understood a lot of thing with u ; please i request u if u can do some video on Finite element method cause they are very very important for engineering to solve equation numerically
this is help so much thank you
THIS IS MY UNIVERSITY
Hi Professor Biezen, thank you again for these excellent videos. My question is: is the no-slip condition at the walls due to the adhesion being greater than cohesion? And if so, does this mean mercury flow through a pipe shouldn't be evaluated with the no-slip condition?
That is an interesting question. Most of the friction forces encountered are within the fluid, and mercury would be no different. However there would be less drag at the surface if the "wetting" was less.
Sir there are so many layers in a laminar flow and I have read that on the application of force the liquid starts flowing and the frictional forces (viscosity) starts acting between the layers,so my question is among which layer the resultant viscosity is developed and which type of force is required to make the liquid flow like while writing F=eta×dv/dx × area which force is it - viscous force or the applied force and which area is it I mean is it cross sectional area of the pipe or something. Please tell.
I don't understand why different velocities implies different pressures. Could someone explain that portion to me?
At time 1:21 Mr. Biezen goes from explaining the effect of viscosity on velocity to the implication that pressure is greater to the right than to the left. I don't follow... :(
hi thanks for your help, there is a question; why didnt we accept that pressure is being less in bernoulli's equations? is that changing too small to consider?
Bernoulli's equation does not take into account viscous forces within the fluid. (It assumes an ideal fluid).
sir what if the R remains constant from the entrance towards the end of pipe?
minute 4:30, I don't understand where you got the (1/0.9R)^4
Delta P ~ 1/R^4 and R = 0.9 P
@@MichelvanBiezen hi you have the best educational videos on youtube ,,,,,,,, just one question maybe our curriculum is different what 'r' refers to
Hi, thanks for these videos, very helpful. I think that you could have made the last part that stars around 4:20 a bit less complex. Maybe writing. "u"L(1/(0,9R))^4= "u"L/R^4*1,524=(P_0)1,524. Do not know how to write special signs in youtube comments, sorry.
Very didactic!
Why is the variable "R" to the 4th power? Thanks for the great info as usual
CoolBanana,
This was experimentally determined around 1840 by Hagen and Poiseuille,
who then turned this into Poiseuille's equation.
I will show the derivation in a later video.
Thank you!!!
u r da shit!!!!!!!!!! thanks from BR
Sir this may seem a bit silly but what is reason behind the change of velocity in the different layers of water ?
+Muhtasim Ittisaf
The is caused by the inter-molecular forces. Think if it as internal friction (viscosity)
+Muhtasim Ittisaf it is well explained friend, each layer drags the other layers in contact, hence slowing them down and vice versa. This dragging is due to viscosity only...
Plese cv video making
So what the actually force formula?
I mean in the fluid flow
you sound kinda like Gru. from despicable me.
was the bow tie really necessary??
nikhil sharma The bow tie is always necessary. Source: Bill Nye