Determine the discharge of water in a 6-in.-diameter pipe that is dynamically similar to a water discharge of 40 cfs in a 4-ft-diameter pipe. Both are at the same temperature. Use the Reynolds number as the modeling law.
If the 6-in.-pipe in has a pressure drop of 0.2 psi in a given length, what is the pressure drop in the 4-ft-diameter pipe in a length that is 1000 times that of the smaller pipe?