Part 1 Estimate properties and pipe diameter Determine the diameter of a steel pipe that is to carry 2500 gal/min of gasoline with a pressure drop of 5 psi per 100 ft of horizontal pipe Pressure drop is a function of flow rate, length, diameter, and roughness. Either iterative methods OR equation solvers are necessary to solve implicit problems. Total head is the sum of the pressure, velocity, and elevation. What is the density of gasoline? 1 slugs/ft What is the dynamic viscosity of gasoline? 2 lb s/ft2 Answer * 1: the tolerance is +/-9% Answer *2: the tolerance is +/-9% Part 2 Estimate pressure drop for an estimate of pipe diameter Pressure drop is a function of flow rate, length, diameter, and roughness. Either iterative methods OR equation solvers are necessary to solve implicit problems For a first guess of a 1 ft diameter pipe, what is the fluid velocity? What is the Reynolds number? Re = What is the pipe relative roughness? What is the friction factor? What is the pressure drop for a 100 ft length of pipe? P2-P1 = s psi Is the first guess too large or too small? Answer *1: the tolerance is +/-9% Answer * 2: the tolerance is +/-9% Answer *3: exact number, no tolerance Answer *4: the tolerance is +/-9% Answer * 5: the tolerance is +/-9%