engineering recuitment UPPSC AE Mock Test 2024 Fluid Mechanics Flow Through Pipes Friction Loss (Darcy Weisbach Equation)
Darcy's friction factor for a fully developed flow through a closed duct is given by _______.
(Consider that Dh is hydraulic diameter, τw is wall shear stress, Δp* is piezometric pressure drop over a length of L, ρ is density and V is average flow velocity.)
1
\(\frac{\rho V^2}{\tau_w}\)
2
\(\frac{D_h \Delta p^*}{2 L \rho V^2}\)
3
\(\frac{D_h \Delta p^*}{\left.L \frac{(1}{2}\right) \rho V^2}\)
4
\(\frac{\left(\frac{1}{2}\right) \rho V^2}{\tau_W}\)