Advanced computer simulation and modelling for solving single phase hydraulic problems

This paper discusses the methods to perform single phase hydraulic calculations for complex piping networks and applications which require a high degree of accuracy. Two separate computer programs are utilized for the simulation and modeling of the networks. Equivalent length of piping and corresponding flows and pressures are calculated by using Overthruster and Kypipe computer programs respectively. The Overthruster Program is designed to perform standardized inplant L/D hydraulic calculations. This program contains certain empirical equations and data. The Kypipe Program is designed specifically to simulate steady state pressure and flow calculations in piping distribution system transporting fluids. Fluor Daniel, completed the modification design and Southern California Edison installed the modification and performed start-up testing of the system. The actual test results, pressures and flows, correlated well within 2 percent of the values predicted by analytical methods. This unique example demonstrates analytical capabilities and the level of accuracies achieved by using this method versus the conventional methods with typical inaccuracies of 10 to 15 percent