AFT Impulse 7 software (photo), a dynamic simulation and analysis tool used to calculate pressure-surge transients in liquid piping systems caused by waterhammer, has been recently updated with over 50 new and enhanced features. Users can create models using an isometric grid and utilize color animation to visualize parameter changes over time. Furthermore, the user interface for defining centrifugal and positive-displacement pump data has been improved, and functionality for calculating buried-pipe wave speed and modeling of pumps as turbines (PAT) has been added. Extensive new Excel capabilities include the ability to export output data and even complete exports while running batch scenarios. — Applied Flow Technology, Colorado Springs, Colo.