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TransAT 5.3

The new desktop version of TransAT Suite – with the modules HPC, Multiphase and Multiphysics- is now available for download. This release is compatible with both Linux based and Windows Operating Systems (OS). The installation package consists of an installation manual and an installer. The in-built demo license allows running simulations for 1 hour using maximum 4 processors.

To download the released version of TransAT, please refer to the download link below. Note that you’ll have to register first and join the community of TransAT users before the download starts. The login you receive after registration gives access to the customer portal where you can:
– report installation issues
– ask for full or extend existing licenses


Please contact us at transat@ascomp.ch to get a link to the code.


Trouble shooting

  • Problems encountered in the installation of the Windows version, Expand
    1. Uninstall the Microsoft Visual C++ 2010 redistributable packages (both x86 as well as x64) from “Control Panel” > “Programs and Features”
    2. Install the Windows SDK 7.1. During installation, under the “Installation Options” menu, UNCHECK the “Visual C++ Compilers” and “Microsoft Visual C++ 2010? components
    3. Apply the SDK 7.1 patch: http://www.microsoft.com/en-us/download/details.aspx?displaylang=en&id=4422
    4. Reinstall the Microsoft Visual C++ 2010 redistributable packages
  • Possible problems encountered when running initial conditions Expand

    The issue can occur when running initial condition: if at the end of the text output of initial conditions, you see an output similar to this:

    c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\INCLUDE\intrin.h(26) : fatal error C1083: Cannot open include file: ‘ammintrin.h’: No such file or directory

    NMAKE : fatal error U1077: ‘”c:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\Bin\amd64\cl.EXE”‘ : return code ’0×2′


    ERROR compiling …

    Then, it is a Microsoft issue. It can be fixed following these steps:

    • Download the file ammintrin. Right-click link and choose ‘Save target/link as’
    • Copy this file in “C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\INCLUDE\”.
Release notes TransAT 5.3.x
  • April 26 2017 TransAT, Expand
    • TransAT Fixes
      – Windows: installer for advanced intitialconditions
      – Windows: build environment (for building UDF’s)
  • Mar 14 2017 TransAT, Expand
    • TransAT
      – Fix for massflux printed by section output for single phase flow and Level-Set method
      – Fix for void fraction calculation at the pressure outflow boundary for homogeneous model
      – Time signals and section output features are activated automatically
    • TransATUI
      – Improvements for handling checkbuttons, value inputs, text buttons
      – Improvements for handling sliders
      – Bugfix for resizing blocks with BMR
      – Turbulent dispersion activated automatically with RANS
  • Jan 23 2017 TransAT 5.3, Download
Release notes TransAT 5.2.x
  • May 26 2016 TransAT 5.2.4, Expand
    • Improved Embedded-Surface-Multiphase discretization
      Stability improvement embedded surfaces + multiphase flows, preventing
      oscillations and keeping time step constant
  • Apr 10 2016 TransAT, Expand
    • Bugfix for reading the contact angle from the BC file
  • Feb 26 2016 TransAT, Expand
    • Correct volumetric heat source calculation
      for conjugate heat transfer from the total
      heat source given in TransAT-UI
    • Correct calculation of effective conductivity for
      conjugate heat transfer & turbulence
  • Sep 30 2015 TransAT_5.2.3.1, Expand
    • python script improvement to find out OS
  • Jul 31 2015 TransAT 5.2.3, Expand
    • bugfix for conjugate objects
  • May 27 2015 TransAT 5.2, Expand
    • New GUI with minimal look (show only inputs/buttons that are important)
    • Porosity + Darcy term available from User Interface
    • Improved algorithms (drift flux model, turbulent dispersion, k-epsilon)
    • Simplified licensing
    • Demo mode (1 hour runtime, max. 4 processors)
    • new windows installer (dependency checks, unit tests)