General Requirements

Operating System

  • 64-bit Windows 10 or 11

Minimum Memory

  • 32GB RAM (64GB recommended)


Since SINDA/FLUINT allows user logic and generates a unique executable each time it is run, you MUST have a copy of the correct compiler.
Prerequisite Software

  • Fortran Compiler
    • The following compilers are compatible with CRTech software
      • Version 6.3: Intel oneAPI HPC Toolkit, version 2021 or newer
      • Version 6.2: Intel® Parallel Studio XE for Windows, version 2018 or newer, or oneAPI HPC Toolkit version 2021 or 2022
    • The Intel compiler requires one of the following, with support for C++ enabled
      • Build Tools for Visual Studio 2019 or newer, This is the recommended option
      • Microsoft Visual Studio 2019 or newer, Community or Pro edition
  • See Fortran Compiler compatibility with all recent versions of SINDA/FLUINT


  • Storage
    • Basic: Local or network drive required for running case sets. Cloud storage is not supported due to the read/write operations required by the solution engine.
    • Recommended: Solid State Drive (SSD) for better performance.

Thermal Desktop®, RadCAD®, and FloCAD®

Prerequisite Software

  • SINDA/FLUINT, which is the solution engine, must be installed
  • CAD Package
    • CRTechCAD v6.3, to learn more about this option contact CRTech Sales
    • AutoCAD® 2018 or newer. The standard version AutoCAD is required, AutoCAD LT is not compatible.
      • Autocad system requirements
      • Thermal Desktop v6.2 will be the last version to support AutoCAD 2017
      • Thermal Desktop v6.3 will be the last version to support AutoCAD 2018
    • See AutoCAD compatibility with all recent versions of Thermal Desktop
  • Hardware
    • Discrete Graphics Card
      • Basic: 1GB GPU with 29 GB/s bandwidth and Direct 11 compliant
      • Recommended: 4GB GPU with 106 GB/s Bandwidth and DirectX 12 compliant
    • Display resolution
      • Conventional Displays: 1920 x 1080 minimum or finer with 100% font size recommended​
      • High Resolution 4K displays: 3840 x 2160 (with capable display card)

TD Direct®

Prerequisite Software


Prerequisite Software

  • Thermal Desktop v6.1 or newer
  • CAD Package: AutoCAD 2018 or newer is required
  • Programming language
    • v6.1 and 6.2 requires ability to connect at runtime to a .NET 4.0 dll
    • v6.3 requires ability to connect at runtime to a .NET 4.6 dll
    • Examples  of suitable programming languages are:
      • C# / VB.NET / F# via Visual Studio or Microsoft Build Tools
      • PowerShell
      • MATLAB
      • Python