Question

Assuming that the drag force exerted by a flowing fluid on a body is a function of the density,viscosity and Velocity of the fluid and a characteristic length of a body. What is the general equation?

Answer 1

General equation of viscous drag is :

$Viscous\ drag= F=k \rho K rv$

Where

$k=proportionality \ constant$

$K=kinematic\ viscosity\\r=characterstic\ length\\v= velocity\\\rho= density \ of fluid$