New Features - Impulse

Impulse 9


  • The Gas Accumulator Properties window has been redesigned to improve usability and add ability to new features such as calculating liquid height
  • Streamline your setup from the new Analysis Setup menu, a user-friendly workflow condensing multiple model-wide specification windows into one
  • The Library Manager (previously the Database Manager) has been completely revised and now offers a consolidated way to use and customize libraries of fluids, pipe materials, junctions, etc.
  • Warnings, errors and Design Alerts shown in the Output are now color coded and organized in a prioritized list for quick review


  • Elbows, Orifices, Venturis and Screens have been added to match AFT Fathom and aide in building models
  • Use the NEW online Help System for centralized documentation and examples from your browser
  • Customize the display names for engineering units of measure to accommodate language or notation differences
  • Convert Shear Rheometer data for Power Law and Bingham Plastic viscosity models with a helpful visual guide
  • Apply the Herschel-Bulkley viscosity model for shear thinning or thickening fluids with a yield stress


  • Contextually update Junction Special Conditions directly from the toolbar
  • Reset Pipes and Junctions as ‘Same as Parent Scenario’ during specification from the Workspace menu


  • Design Alerts are grouped together on their own tab in the General Output section for easy identification
  • Save time with enhanced Output window data loading speed


  • The Vacuum Breaker junction has been renamed to an Air Valve
  • Submerged pumps can be defined using surface pressure and depth
  • Valve transients can be specified as open percent vs time


  • Multi-scenario graphs can now be plotted with scenarios having different pipe sectioning and time steps
  • Batch runs of multiple scenarios now report the number of Warnings and Design Alerts in each Scenario
  • Run batch runs “silently” in the background to minimize interruptions as each scenario completes
  • Search for text in Pipe and Junction Notes, useful for component specifications or intended operating conditions
  • Right-click a pipe or junction table row to quickly find the object on the Workspace


Impulse 8


  • Data can be compared between multiple scenarios to show changes made
  • Multi-scenario graphing allows easy comparison of results
  • Multi-level undo and redo on the Workspace
  • New capability to model unsteady friction
  • Single or multiple transient Force Sets can be defined directly from the Workspace


  • Improved intelligence on when a model needs to be saved to preserve the output
  • Improved model loading speed
  • Improved language refresh speed
  • New and updated themes


  • Magnifier tool to quickly view objects on the Workspace
  • Allow pipe/junction editing while the Undefined Items panel is shown
  • Double-click on a junction on the Toolbox to add multiple to the workspace (similar to pipes)
  • Ability to draw pipes off the grid when in isometric mode
  • Junction icons will be automatically rotated to align with pipes
  • Select shorted path between two junctions

Visual Report

  • All Summary Output parameters can now be displayed on the Visual Report
  • Visual Report Control has been redesigned
  • Forces can now be shown


  • New capability to model unsteady friction
  • Convert intermediate elevations to new pipes and branches
  • Pipes can be joined together to form a single pipe


  • New pump four-quadrant curves added
  • Improved guide to selecting four-quadrant pump data sets
  • More intelligent Tee/Wye junction during input and Workspace movements


  • Notes can be added to cells in the Output to set
  • Output Control parameters can be filtered by typing + to help selection

Global Edit

  • Revised to improve usage
  • A step-by-step guide is now available
  • A pipe or junction can be selected as the base data to apply to other pipes and junctions
  • Notes can be globally edited on junctions


  • Ability to import custom Fittings & Losses from Excel
  • Design Alerts and can be saved to and loaded from a file
  • New Diagnostics window to help identify special features or options being used in the scenario


  • Export forces to AutoPIPE
  • X-Y-Z directions (unit-vector) can now be added to a force for exporting

Impulse 7

  • General interface

    • Added general unit system, language, pipe material and other preferences to the Startup Control window with the ability to set these as the default
    • Clearer Excel import capabilities using keywords
    • Excel changes can be made to multiple scenarios at one time
    • Increased the loading speed for large models
    • Added option to add additional rows to the data tables (like Cv vs. Open Percent, etc.)

     Model Import

    • Import from a CAESAR II neutral file
    • Import from a Piping Component File (.pcf)
    • Import or export a EPANET file

     Excel Export

    • Output can be exported using the new Excel Export Manager
    • Single values, columns, rows or entire output tables can be exported
    • Data from a Graph List item can be exported
    • Specific starting cells and target worksheets can be defined
    • Headers and units can be optionally included
    • Data can be exported automatically after the model is run
    • Export can be automatically done during a batch run of scenarios

     Standards and Codes

    • New output area which shows codes and standards used in the modeling process
    • Standard references are updated to current versions where applicable


    • Isometric grid drawing
    • The background opacity level can be changed for Annotations
    • Keyboard shortcuts to zoom and pan
    • Symbol to show pipes with Fittings & Losses defined


    • Made rotodynamic (centrifugal) and positive displacement pump data entry clearer on the Pump Property window with automatic periodic PD pump flow calculation
    • Improved four quadrant modeling for pumps
    • Streamlined specifying trip and startup cases
    • Enhanced pump inertia estimation and specific speed selection
    • Variable speed and controlled pumps can trip during a transient
    • Pump as Turbine (PAT) modeling
    • Redesigned Check Valve Property window and clearer data entry
    • Added dimensional and more non-dimensional closing velocity estimation profiles
    • Added translating nozzle/plug force balance type
    • Pre-defined Cv vs. Open Percentage profiles for valves
    • New finite tank option for the Reservoir junction
    • Time delay option for Vacuum Breaker Valves
    • Ability to define a relief valve effective orifice based on API 526Ability to set default for Always Control Never Fail on Control Valves


    • Buried pipe wave speed calculation
    • Intermediate pipe elevations can be entered as length from the pipe beginning
    • Added many EN and DIN pipe standards to the available pipe materials
    • Improved ability to select the pipe materials to be used in the model through the Database Manager


    • Forces are calculated during the run for improved output display and graphing speed and flexibility
    • Exit differential forces


    • Data can be exported to specific cells in an Excel Worksheet
    • Right-click on cell or column header to create a Design Alert, add to the Excel Export Manager, copy data, find on the Workspace, sort and change units
    • Data can be sorted by clicking on the column heading
    • Output reports in Portuguese

     Visual Report

    • Better selection of image and data options
    • Animation of results using color to visualize parameter changes over time


Impulse 6

  • General interface
    • Improved tab interface and enhanced Quick Access Panel functionality
    • Improved search includes pipe and junction notes, names and numbers
    • Output reports in German and Chinese languages
    • Main menus are translated into available output languages
  • Graph Results
    • Multiple Graphs Sets can be added to Graph Folders for easy generation and display
    • Multiple graph tabs on primary window Graph tab
    • Multiple parameters can be stacked on separate graphs using the same X-axis
    • Secondary Y-parameter for most graph types
    • Multiple graphs tiled on same Graph tab
    • Multiple graphs can be animated at the same time
    • New graphs can be defined directly from the Workspace
    • New parameters such as Kv, Cv rate of change, valve position, liquid accumulator volume
    • Easy formatting of titles, axis labels, and plot lines
    • Plot series lines can be turned on/off for quick inspection
    • Graph controls now located on the Quick Access Panel for easy graph definition and changes
    • Animations can be saved in MP4 and QuickTime formats
    • New Graph Guide to quickly direct new and experienced users to basic and advanced graphing features
  • Scenario Manager
    • Scenario manager shows which scenarios have output
    • Ability to create child scenarios without results saving duplication and load time
  • Workspace
    • New paste preview mode allows the pipes and junctions to be placed where desired and will indicate interference with existing objects on the Workspace
    • GIS shape files can be imported to create a model
    • Text alignment options in annotations
    • Annotations can be layered on the Workspace
  • Output
    • Results Diagrams which graphically show data for pumps
  • Visual Report
    • Automatic Color Map generation
  • Pipes
    • Design Alerts are specified and named globally and applied to pipes
    • New Design Alerts available
  • Junctions
    • New Turbine junction type
    • Surge Anticipator valve  capability added to the Relief Valve
    • Remote pressure sensing capability added to the Relief Valve
    • Improved clarity for data entry in the Reservoir/Tank Property window
    • Automatic generation of Cv vs. Time using equal percentage or linear profiles
    • New events based on Cv or Kv
    • Maximum pressure setting for Gas Accumulators simulates a relief valve
    • When the speed is set for a pump, both the original and modified pump curves are shown on the Pump Property window
    • Design Alerts can be applied to junctions
    • New dynamic check valve model
    • New method from Thorley for estimating reverse velocity through check valves at closure
  • Forces
    • New Force Summary report available in the output showing all applied force sets
    • New Design Alerts can be applied to Force Sets and shown in the Force Summary
    • New Force report in Model Data showing the input details
    • Force definitions can be imported from an Excel file
  • Animations can be saved in MP4 and QuickTime formats
  • Enhanced check valve modeling based on inertia


Impulse 5

  • Completely redesigned user interface with tabbed window access and new transparent icons
  • Robust support for dual monitors
  • New Startup panel allows user to choose engineering unit system (U.S./metric) and specify default fluid
  • Improved printing features includes use of company logo, user comments and titles, as well as graphical borders on all printouts
  • New Quick Access Panel includes access to Scenario Manager
  • New mapping feature flyout allows birds-eye view of model and navigation
  • Improved navigation speed for large models with thousands of pipes and junctions
  • Annotations capability great improved now allows user's images to be inserted into the annotation
  • Enhanced Relief Valve modeling, including Danflo and Grove Flexflo
  • Discrete Gas Cavity model to calculate cavitation
  • Pump specific speed and estimated inertia calculator integrated within the pump propertied window
  • Improved pipe sectioning window
  • Fittings and losses can now have user "Favorites" which allows for much faster navigation to frequently used fittings
  • New Pipe Material Databases based directly on international pipe standards
  • Handle varying ambient pressure with elevation allows for better understanding of gage pressure on submerged pipes at different depths
  • New Adjusted Turbulent K factor method allows for improved support of laminar pressure drop in fittings and valves
  • Non-settling slurry features accepts raw rheological data and generation of non-Newtonian constants as well as new raw data Scale-up model
  • New SSL module to calculate settling slurry flow
  • New Weir junction
  • Force imbalance calculations can now extend across more than two pipes
  • Pipe data can be modified through an Excel file
  • Ability to specify a reference pressure in a closed pipe during steady-state which will be used during the transient portion
  • Annotations can be placed directly on graphs
  • Junction symbols can be shown on Profile and HGL/EGL/Elevation graphs allowing easy identification of the location within the model

Impulse 4


  •        Users can create transient force files for use in CAESAR II pipe stress software
  •        Select Special on pipe material
  •        Significantly enhanced global editing of pipes and junctions (data now shown in categories)
  •        Batch runs for scenarios
  •        All printing can go directly to a PDF file
  •        In grids, cells that have drop-down capability have a persistent drop down symbol
  •        Initialization and data files now saved to user folders

Pipes and Junctions

  •        Enhanced fittings & losses entry for pipes
  •        New pipe friction model uses resistance in dH/Q2
  •        Valves now support Cv vs. percent open (like Control Valves)
  •        More advanced control valve logic


  •        Renumber Increment Added
  •        Shortcut button provides fast access to explanations of shortcut functions
  •        Selections can be rotated right or left
  •        New window added to show all undefined pipes and junctions and missing properties

Model Data

  •        Can see data for all scenario direct ancestors on Model Data


  •        Users can print Model Data with output

Graph Results

  •        Can graph forces on pipes


  •        Power Law and Bingham Plastic now cover both laminar and turbulent flow        

Transient Control

  •        Users can define force pairs for purposes of plotting force data
  •        Runtime estimates based on users previous runs

Impulse 3

  • New animation feature for graphing improves interpretation of results
  • Pumps can be tripped or started based on events
  • Pumps can trip and then restart and vice versa
  • Pump four quadrant data sets increased from three to twenty-one
  • New pump startup method using motor torque and speed data
  • Vacuum Breaker Valves can model dual vacuum break/air release, or only vacuum break or air release
  • New Special Condition Ignore feature for vacuum breaker valves, surge tanks, gas accumulators, relief valves and liquid accumulators simplifies locating surge suppression equipment
  • New feature allows modeling of three-stage air valves
  • New relief valve pressure loss model with Cv vs. pressure difference allows improved modeling of passive relief valves
  • Pipes can be modeled with diameter reduction because of scaling
  • Pipes connected to vacuum breaker valves, exit valves, spray discharge or assigned pressure junctions can drain or start the transient partially full
  • Pumps can be specified to control pressure only when set pressure is exceeded high or low
  • New Renumber Wizard added
  • Annotation Manager added to allow selective display of annotations on Workspace and Visual Report

Impulse 2

  • Steady-State Solver added to automatically initialize transient conditions
  • New Scenario Manager to keep variants of a model saved in a single file in a parent-child relationship of any number of levels
  • New Chempak thermophysical database offers over 600 fluids which can be used as pure fluids or user defined mixtures
  • Enhanced pump features include efficiency and power usage, and multiple configurations depicting different impeller sizes and rotational speeds
  • Non-newtonian fluid modeling using Power Law and Bingham Plastic models
  • User configurable choice of which engineering units are displayed in drop down unit selections
  • User selected preferences for each individual type of engineering unit
  • User specified design factors for pipes and junctions
  • Special Output window summary reports for pumps and valves
  • New Database Manager to ease creation of databases and to allow selective access to data
  • Ability to model event based transients
  • Variable pipe friction resistance during transient solution
  • Added Duffy method and Brecht & Heller method for pulp and paper modeling
  • Ability to model vacuum breaker (air inlet) valves
  • Model of pump inertial effects during trips and startups including four quadrant methods
  • Modeling of pumps with flow rate transients (useful for positive displacement pumps)
  • Modeling of pumps with viscosity corrections
  • Modeling of variable speed pumps with controlled flow or pressure
  • Repeat transient feature for periodic transient behavior
  • New control valve junction for modeling pressure and flow control valves
  • New volume balance junction to model moving fluid interfaces
  • Intermediate elevation changes in a pipe can be specified
  • Greatly expanded global editing for junctions
  • Support for embedded fittings and valves in pipes with a library of 400 fittings
  • New Tee-Wye junction which uses Idelchik for dynamic K factor calculation
  • New tabbed folders on pipe and junction specifications windows
  • Notes can be kept for each individual pipe and junction
  • Ability to show pipe and junction names on the Workspace
  • New Select Special feature added which is a powerful selection tool that allows users to set specific criteria for selecting groups of pipe and/or junctions for editing or reporting
  • Ability to turn junctions on and off
  • Pipe can have graphical segments
  • Annotations can be added to Workspace and Visual Report
  • New ability to create named groups of pipe and/or junctions for quick selection
  • New ability to load a background picture as a backdrop to the Workspace or Visual Report
  • New morphing feature allows one junction to be morphed into another
  • New Duplicate Special feature
  • Model Data organization improved using tabbed folders
  • Output window organization improved using tabbed folders
  • Output window junction data separated into separate table for each junction type
  • Enhanced reporting on separate tabs for steady-state and transient output
  • New profile graphs to graph results at a specific time or maximum and minimum values
  • Ability to save graph for later recall
  • Visual Report units can be shown in a legend
  • Improved printing features include fit to multiple pages, printing selected pipes and junctions, horizontal and vertical centering, and setting margin sizes
  • Dockable and customizable toolbars, with many new toolbar icons
  • New Status Bar shows updated Checklist and ready light goes on when model is complete
  • New user specifiable design alerts feature to warn user when results exceed specified limits
  • New Autosave feature
  • Ability to cancel global pipe and junction edits

Log in

Login to your account

Username *
Password *
Remember Me

Create an account

Fields marked with an asterisk (*) are required.
Name *
Username *
Password *
Verify password *
Email *
Verify email *
Captcha *
Reload Captcha
© 1996 - 2024 Applied Flow Technology