To investigate the effect of roughness on the shear stress in open channel flow, the following variables are considered: the average velocity, V, the normal depth, d, the fluid density and viscosity,...

To investigate the effect of roughness on the shear stress in open channel flow, the following variables are considered: the average velocity, V, the normal depth, d, the fluid density and viscosity, p and µ, the acceleration due to gravity, g, the boundary shear stress, 7 , and the roughness height,
. Use the Buckingham method to show that (g/ ) is a function of rhe Reynolds number, Froude number, and relative roughness, where C is the Chezy coefficient.