Physics 34.1 Bernoulli's Equation & Flow in Pipes (8 of 38) Calculating the Frictional Head Loss

In this video I will calculate the frictional head loss of a cast iron pipe, L=100m, v=2m/s, D=2”=50.8mm, of water of temp=20C.

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[frankebass]

Great playlist, this is really well explained and helpful! Thanks for the great work

[ziky]

Now I understand why Western education system are so advanced and practical 👍

[yvonnevianney]

Thank you, I'm learning a lot more than my lecturer taught

[JasonP-peyz]

thank you. simple and straight forward

[mro]

Great lecture!
At 2:52 I think we should look for 0.003 instead of 0.03 on chart, if I'm not wrong.

[kronnox]

What if we are given the friction instead, how would you find the relative roughness or at least the roughness of a pipe using experimental data only?

[wizardhunts]

Great explanation! I was following all the way through. I just need to know what "effective length" is. Apparently it has the something to do with the addition of head loss in pipe and head loss due to fittings (k factor)? Any help would be greatly appreciated!

[bgxktqc]

where can use the formula 4flv^2/2gD and flv^2 / 2gD is there any difference? please give some example between 4flv^2 /2gD and flv^2 / 2gD . when I can use that formula?

[septiand]

What if the flow is laminar.. could you tell me what is the next step..?

[kennethjamero]

where can use the formula 4fLv²/2gD and flv²/2gd is there any difference? thank you sir!😊

[finlaycharleson]

I know this is not really relevant to the video exactly but does the viscosity of a fluid depend on its temperature if so what formulae are there to describe this, also does the flow rate change therefore depending on temperature?

[jace_Henderson]

Why does my book and teach say RPR is D/e I noticed that a lot of formulas we’re using on my class are kinda swapped, like that, idk why. Our flow graph relative roughness numbers are the polar opposite, they’re tens of thousands as opposed to 10’s of thousandths.

[andrewjustin]

Mr. Michel why did you calculate the friction factor from the Moody diagram? Could I possibly have utilized f = 64/Re where Re is the Reynolds number

I solved using that and my answer appears to be encountering a momentous deviation from your answer 😭

[ssksha]

What is the unit of kinematic viscosity in this equation?

[egmelaku]

Dear, Michel van Biezen.
It was a wonderful tutorial. Appreciated it, Thank you!
But, How about pipes connected end to end? or a network of supply lines going to the house tap, say, a shower?

[BryantJ]

@Michel van Biezen  how are you doing?
I was wondering if I can ask you a question, regarding head loss math problem I have. I can't seem to figure it out. Can I email you ?

[menailsajid]

I don't get same fanning friction factor value😭