PUMPCOM - A simulation model for operating characteristics of pumping stations through combination of individual pumps

The computer model PUMPCOM has been developed to combine pump curves in ser ies and in parallel for a variety of pumping stations using a WINDOWS envir onment. The model determines the performance of a pump station and of indiv idual pumps within the station via construction of head-discharge curves, e fficiency curves and curves indicating net positive suction head requiremen ts. A graphical interface allows the user to draw the pump station layout o n screen, to view discrete data entered, and to view the fit of polynomial equations. An icon "tool box" allows the user to select an appropriate pipe fixture and place it in the layout between pumps. This allows the pump sta tion drawing to resemble as closely as possible the real pump station. Data tables, plots of the curves and equation coefficients, and station layout can be printed. Polynomial equations are fitted to individual pump curves a nd to the combined pump station curves. Cubic spline interpolation is emplo yed to combine curves of pumps having different sizes. Performance indicato rs of the station and of each pump within the station are calculated over f low rate range for the entire station.