How the Pressure and Velocity changes in a pipe with cross section? For more interview questions in mechanical engineering click here: bit.ly/intervi...
sir i have one doubt, while deriving the bernoulli's eqn we used workdone which is F*D , where F is replaced by pressure * area , this is the pressure which comes in final equation. then how come this pressure is different and hydrostatic pressure is different ?..............in bernoulli's eqn pressure acting on pipe wall is not considered, then how you use that to explain??
This is all assuming you have adequate flow rate to keep the cavity full of fluid at all times? E.g. doesnt this break down when you go from a cross section to a relatively absurd cross section. For example when fluid leaves a hose into the environment. The pressure clearly does not increase, yes?