For turbulent flow (NRe > 2100) of low viscosity fluid (? > 20cp) in steel pipes, the optimum inside pipe diameter is given by(where, Q = fluid flow rate, ft3/sec, ? = fluid density, lb/ft3 ? = fluid viscosity, centipoise Di = optimum inside pipe diameter, inches) ?

Found an error? Read our corrections policy and report it in the comments below.