Sir thanks for the video. However please note that fluid is moving due to the energy (head, pressure, velocity) created by pumping system not due to pressure drop (p1-p2) which is due to losses like frictional. This pressure drop is not at all desirable in any pipeline.
sir, I had one question. can u plz solve it for me? " One meter diameter pipe is to carry a water discharge of 1 cumec at a minimum loss of energy. What will be the permissible height of surface roughness?" It is the full question, but sth is either hidden or not given, which may be needed to be assumed. It had been asked in our exam. What values will be assumed to solve this question? Thank you! I like your videos.
Sir can you clarify me that in Darcy-Weisbach equation that {f'/density} = {f/2} (how is this derived) That means ratio of frictional resistance per unit wetted area per unit velocity to density will be equal to half of co-efficient of friction.
There is friction coefficiant, darcy friction factor, fanning friction factor !!! I dont know which one to use....please help if you see this comment. I did not get the answer even after watching full video.
Sir... What about pressure... As u told in the previous class during verturimetet derivation, that If diameter increase = press increase+ velocity decrease. And vice versa. Then what about pressure here because, here all the measurements are equal Such as area,velocity, and main thing is that diameter also equal. So as your concept of previous class, pressure should also equal
awsm sir . gr8 work . m from Don Bosco Univrsty .guwahati,Assam. sir hindi mei bohot asche se samja ajj orr vi vid baniye engg 4th sem ke sylbus pr.respct&love.hope ki..... 1 year oe 2 year k badd me ye chnnl youtb ka search engine ka 1st list me hoga.
Sir, Mistake at 10:10 Friction resistance equation is based on the assumptions. Why we need to multiply with square of velocity, instead of velocity..???
because it is also an assumption that frictional resistance is proportional to nth power of velocity. some books take n=1.5 and some take n=2 so v square (In laminar frictional resistance is proportional to velocity only)
In some books you will get friction factor as f which is also called as lamda and they will also say f is coefficient of friction so, don't get confused. Actually, in head loss due to friction equation (hf) = 4fLV^2/(2gD) where f = coeffeicient of friction and if we take (4*f) this term in head loss equation (hf) we call it as a friction factor. Which is also called as lamda (Friction factor). Thats why in Moodys diagram you will get on L.H.S (Lamda = 64/Re), Since Lamda = 4f then (4f = 64/Re) after that ( f = (64/Re*4)) and finally you get coeffeicient of friction (f = 16/Re). Without correct, coefficient of friction value you will not be able to find correct head loss due friction.
In some books you will get friction factor as f which is also called as lamda and they will also say f is coefficient of friction so, don't get confused. Actually, in head loss due to friction equation (hf) = 4fLV^2/(2gD) where f = coeffeicient of friction and if we take (4*f) this term in head loss equation (hf) we call it as a friction factor. Which is also called as lamda (Friction factor). Thats why in Moodys diagram you will get on L.H.S (Lamda = 64/Re), Since Lamda = 4f then (4f = 64/Re) after that ( f = (64/Re*4)) and finally you get coeffeicient of friction (f = 16/Re). Without correct, coefficient of friction value you will not be able to find correct head loss due friction.
In some books you will get friction factor as f which is also called as lamda and they will also say f is coefficient of friction so, don't get confused. Actually, in head loss due to friction equation (hf) = 4fLV^2/(2gD) where f = coeffeicient of friction and if we take (4*f) this term in head loss equation (hf) we call it as a friction factor. Which is also called as lamda (Friction factor). Thats why in Moodys diagram you will get on L.H.S (Lamda = 64/Re), Since Lamda = 4f then (4f = 64/Re) after that ( f = (64/Re*4)) and finally you get coeffeicient of friction (f = 16/Re). Without correct, coefficient of friction value you will not be able to find correct head loss due friction.
Aap pressure drop ko head loss me change Kar sakte ho. That is up to you. Because head loss ek Tarah ka energy loss Hai. Head means height. Head loss ko aap Alag Alag liquid me Dikha sakte ho like in case of water flowing though pipe then meter of water (m of h2o), in case of alcohol flowing through pipe, it is meter of alcohol ( m of alcohol), another like meter of mercury (m of Hg). Actually analysis karne me easy Hota Hai jab sab losses or pressure head losses or head me convert ho to.
