• Advanced transient solver based on Method of Characteristics.
• Built-in steady-state solver to automatically initialize waterhammer transient.
• Detailed pump inertial modelling for trips and start-ups including state-of-the-art, four quadrant methods.
• Built-in library of fluids and fittings.
• Models liquid column separation caused by transient cavitation.
• Extensive cavitation modelling.
• Scenario Manager to track all design variants and operational possibilities in a single model file with data linkage.
• Comprehensive relief valve modelling.
• Integrated graphing and reporting.
• Animation features to dynamically graph transients.
• Create video files from animations to share your results.
• Generates force imbalance files that can be automatically read into CAESAR II and TRIFLEX pipe stress dynamic models.
• Built-in intelligence to guide you in building better models.

AFT Impulse 9.0 Capabilities:
– Avoid potentially catastrophic effects of waterhammer and other undesirable system transients
– Initiate transients based on time or events in the system
– Reduce surge magnitudes by slowing system changes such as valve closures or pump speed
– Minimize the adverse effects of surge by changing piping or equipment to reduce velocities
– Calculate transient unbalanced forces and define forces sets as location pairs or single points
– Specify alerts that automatically highlight output values that are out of range for flow, pressure or velocity
– Compile libraries of your frequently used piping components and quickly select them from a drop down list
– Customize and configure your workspace

AFT Impulse 9.0 Typical Applications:
– Ensure pressure extremes are within design allowables
– Waterhammer calculation
– Size and locate surge suppression equipment
– Determine imbalanced pipe forces and sizing structural supports
– Troubleshoot existing systems to determine the cause of operational problems
– Evaluate the effect of pressure surges due to vapor cavity collapse