The pressure drop, , for steady, incompressible viscous flow through a straight horizontal pipe depends on the

The pressure drop, Δρ, for steady, incompressible viscous flow through a straight horizontal pipe depends on the pipe length, l, the average velocity, V, the fluid viscosity, μ, the pipe diameter, D, the fluid density, ρ, and the average “roughness” height, e.

Determine a set of dimensionless groups that can be used to correlate data.