AFT Impulse

 

Water Hammer & Surge Analysis Software

Software from Applied Flow Technology will simulate steady-state Newtonian liquid (incompressible) flow, gas (compressible) flow and unsteady liquid flow (water hammer) in complex pipe system. Non-Newtonian/non-settling liquids and settling particulate slurries can also be modelled.

AFT programs share an identical user-interface where schematics of the pipe systems can be developed in flowsheet format using a convenient drag-and-drop technique.

AFT’s presentation of pipe flow results – flows, pressures, changes in density etc in graphical format - is particularly comprehensive providing the user with informative feedback on the performance of the system.

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

 

AFT

MORE SOFTWARE FROM APPLIED FLOW TECHNOLOGY

Evaluate AFT Impulse

Download a fully-functional licence with specific limitations...

  • Build and run any model with a maximum of five pipes.
  • Build and run models of any size using a fixed fluid density and pre-set resistances and wave speeds.
  • Load and run any of the files from the Examples or Verification directories

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 limits
  • 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 vapour cavity collapse

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

AFT Impulse Features

  • Advanced transient solver based on Method of Characteristics
  • Built-in steady-state solver to automatically initialize water-hammer 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
 
 

DOWNLOADS

Brochures

Optional Modules
Settling Slurry (SSL) model both non-settling and settling slurry water hammer effects.

Case Studies
View Case Studies using AFT software.


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

AFT Impulse Settling Slurry (SSL) Module

Enhance Your Transient Analysis with Settling Slurry Capability

Building on the foremost software for calculating pressure transients in piping systems, the AFT Impulse SSL Module models waterhammer effects on systems containing settling slurries.

With this add-on module, AFT Impulse is the only commercial software solution that can model both non-settling and settling slurry waterhammer effects.

The Settling Slurry Module helps:

  • Avoid system failures
  • Prevent plugged pipes and misapplied pumps
  • Improve safety by understanding slurry waterhammer transients
  • Expertly handle slurry system challenges

This module has been designed specifically for AFT Impulse and can work with your existing models.

The AFT Impulse SSL module lets you

  • Accommodate a wide range of slurry data
  • Predict slurry wavespeed
  • Enter properties of solids particles and keep them in a sharable database
  • Evaluate multiple design and operating cases using Scenario Manager
  • Use state-of-the-art correlations to predict flow and initial pressure distribution to initialize the transient

Modelling Features

  • Specify Slurries:
    • Basic Water Slurry Input - uses water as the carrier fluid and treats all pipes as isothermal
    • Advanced Slurry Input - use any fluid as the carrier fluid, allow slurry properties to vary among pipes, and allow heat transfer and system energy balance calculation
  • Choose from three slurry calculation methods:
    • Minimal - can be used in the preliminary design phase
    • Simplified - additional information is required and gives a better solution
    • Detailed – (default) provides the most rigorous solution methodology
  • Calculate wavespeed based on properties of carrier liquid and solid particles

Support

Accutech provides both engineering and key-stroke support for Impulse backed up the developer, Applied Flow Technology.  The annually renewable Support, Update and Maintenance (SUM) agreement ensures that your licence is always up-to-date and that we can provide timely assistance.  Send us your design file and we can explain your results, check for errors and feedback suggestions for improving your design.  We use our video-chat capability to navigate you through your model, whilst we both concurrently view the flowsheet.

Training on Impulse is provided by the developer AFT.