Pump System Improvement Modeling Tool™ (PSIM) is a FREE educational tool to help you better understand the hydraulic behavior of pumping systems. Using state-of-the-art solution algorithms and an intuitive drag-and-drop interface, PSIM makes it easy to calculate the pressure drop and flow distribution in both straight-path and simple branching or looped pumping systems.

PSIM calculates pump energy usage and energy cost over time using Net Present Value concepts.

PSIM creates Pump vs. System curves, a powerful tool to help engineers better understand the intricacies of pump system behavior.

PSIM capabilities include: System hydraulic calculations Centrifugal & Positive Displacement pumps Pump efficiency and BEP evaluation Variable speed pumps Flow & pressure control values Impeller trimming Automatic pump curve viscosity corrections NPSH calculations

This FAQ page will answer many questions on the use of the PSIM software.

PSIM is produced by Applied Flow Technologies and is a limited version of AFT Phantom. The limitation is a size limit of 12 pipes maximum in a model (compared to 10,000 in AFT Fathom).

If you have trouble with the dowload please contact me and I will get the file to you by other means. Also please let me know if you have a successful download, some people are having problems with the download and it is important that we know the level of success vs. failure. Thanks.