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AFT Impulse – Waterhammer & Surge Analysis Software

Waterhammer & Surge Analysis Software

AFT Impulse is a powerful fluid dynamic simulation tool used to calculate pressure transients in piping systems caused by waterhammer.

Designed for use in liquid systems containing:

  • Water
  • Petroleum and refined products
  • Chemical products
  • Cryogens
  • Refrigerants
  • And more

AFT Impulse is particularly useful for:

  • Ensuring that pressure extremes are within design allowables
  • Sizing and locating surge suppression equipment
  • Determining imbalanced pipe forces and sizing structural supports
  • Troubleshooting existing systems to determine the cause of operational problems
  • Evaluating the effect of pressure surges due to vapor cavity collapse

Design and Operate Your System with Greater Safety and Reliability

AFT Impulse will help…

  • Avoid potentially catastrophic effects of waterhammer and other undesirable system transients
  • Alleviate possible financial and environmental issues associated with inadequate system designs or operational procedures
  • Prevent events that have serious consequences to life and property
  • Avoid lost revenue resulting from incidents that cause down time
  • Validate the design of safety features


  • Advanced transient solver based on Method of Characteristics
  • Built-in steady-state solver to automatically initialize waterhammer transient
  • Detailed pump inertial modeling 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 modeling
  • Scenario Manager to track all design variants and operational possibilities in a single model file with data linkage
  • Comprehensive relief valve modeling
  • 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
  • Import piping layouts and dimensional data from GIS shapefiles,CAESAR II® Neutral files andPiping Component Files(*.pcf) fromAutoCAD Plant 3D®,SmartPlant®,CADWorx®and others.
  • EPANETimport / export Excel integration

World Class Support

Your software license purchase includes 1 year of technical support provided by our team of professional engineers. More than software support, Applied Flow Technology provides the waterhammer analysis knowledge that comes with extensive real world experience.

Get More Information on AFT’s website!

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