Darcy-Weisbach Friction Factor using Jain Approximation

Computes value of Friction Factor using Jain(1976)

f = Darcy-Weisbach friction factor
ks = Equivalent sand roughness height (a material property; in feet or meters)
D = Pipe diameter (in feet or meters)
Re = Reynolds number (a flow property)

Jain, A. K., 1976. Accurate explicit equation for friction factor.
ASCE J. of Hyd. Div., 102(HY5) pp. 674-677

Enter Value for Diameter (D in feet or meters) :

Enter Value for Roughness height (ks in feet or meters):

Enter Value for Reynolds Number (Re):