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Primary Features of AFT Impulse 7

  • 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
Primary Features of AFT Impulse 7

Designed for fluid systems containing:

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

Modeling Features

Pumps

  • Implements the Sutter method for inertial modeling of both the motor and entrained fluid
  • Four-quadrant modeling allows for reversed-flow and reversed-speed operations
  • Set startup and trip/shut down for a specific time or based on a system event
  • Model centrifugal and positive displacement pumps
  • Model pumps with variable speed controllers

Valves

  • Model flow control and pressure control valves
  • Model relief valves that are in-line with the pipeline or that relieve to atmosphere
  • Change control valve set points over time

Surge Suppression

  • Identify and test surge suppression devices and where they are best placed in your system
  • Model gas accumulators and surge tanks to minimize pressure spikes
  • Model vacuum breaker valves as either 2-stage or 3-stage and include air release capability
  • Model relief valves to protect sensitive equipment

Scenario Manager

  • Evaluate “What-if” cases by comparing several scenarios
  • Make data changes in one scenario which can be passed down to dependent scenarios
  • Easily develop and switch between different operating conditions or configurations (for example: three pumps running vs. two pumps running with one pump tripped)
  • Evaluate new or expanding system configurations
Modeling Features

Reporting Features

Output Window

  • Display reporting sections all at once or individually
  • Select output format, units and displayed items through Output Control
  • Make changes to the format without re-running the analysis
  • Export results to a file or copy/paste into Excel for additional reporting options

Visual Results

  • Displays selected input or output parameters with your model schematic
  • Vary pipe color in the model according to parameters you define based on pressure, temperature, flow and many others to see results in the context of your system
  • Clearly illustrate individual lines in the context of your entire system using color mapping

Graph Results

  • Graph a wide variety of output data such as plot flows, pressures, velocities, and more vs. time
  • Supports both instantaneous flow and integrated flow plots
  • Customize graph formats
  • Animated graphs dynamically display results for one or multiple flow paths

Viewer

Share your models with anyone who may not need a full version of AFT Impulse. The Viewer is a free application that lets you:

  • Open a model and view any of the windows (Workspace, Model Data, Output, Visual Report, Graph Results)
  • Run the model and graph output data
  • Print and export data
  • You cannot edit an existing model or create new models with the Viewer.
Reporting Features
Image

How does it work?

AFT Impulse incorporates a steady-state solver providing seamless transfer of initial conditions to the transient analysis. Steady-state solutions are determined using a modified Newton-Raphson matrix iteration. The traditional Method of Characteristics is used to solve the transient mass and momentum equations of pipe flow.

Free Viewer

Viewers allow you to share your models with others

Product FAQ's

View a full list of AFT Fathom questions and answers

SUM Agreement

Software comes with 1-year of free Support, Upgrades & Maintenance

System Requirements

Ensure your software works
properly with your system

Learning Center

© 2020 Applied Flow Technology

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