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Thermal-Flow
Contains general thermal and flow solver related documentation, such as the verification test cases, monthly critical fixes, DMP guide, and knowledge base articles.
Updating the TMG solver patch
You can update the TMG solver patch for the thermal-flow solver by manually replacing the solver files or by using the appropriate environment variable.
Use a TMG solver patch from a separate location
Use this method to keep the TMG solver patch in the installation unchanged and load the patched solver from a separate location.

Thermal-Flow
Contains general thermal and flow solver related documentation, such as the verification test cases, monthly critical fixes, DMP guide, and knowledge base articles.
- TMG thermal-flow solvers
  Maya HTT develops and maintains a thermal solver and a flow solver, which are combined into the TMG thermal-flow solvers. These solvers are included and distributed with Simcenter 3D, NX Designcenter, and Simcenter Femap. Older versions of TMG thermal-flow solvers are also included in NX I-deas.
- Thermal and flow verification test cases
  Contains verification test cases for the thermal and flow solvers.
- Updating the TMG solver patch
  You can update the TMG solver patch for the thermal-flow solver by manually replacing the solver files or by using the appropriate environment variable.
  - Update the TMG solver patch manually
    Use this method to replace the TMG solver files in the installation.
  - Use a TMG solver patch from a separate location
    Use this method to keep the TMG solver patch in the installation unchanged and load the patched solver from a separate location.
- TMG Executive Menu
  TMG Executive Menu is a standalone application that lets you execute processes on thermal-flow files and solutions independently of Simcenter 3D or Simcenter Femap.
- Thermal and flow DMP guide
  Describes the general workflow for executing the simulation jobs using distributed memory parallel processing on clusters and the scheduler-dependent files required to submit the jobs to the scheduler.
- Solver supported compilers per version
  For each released version of the TMG thermal-flow solvers, the following table lists the compiler version that you can use when you compile your subroutine, thermal solver plugin function for expressions, or flow solver plugin function.
- Solver supported GPU cards per version
  The following table lists the supported graphics processing unit (GPU) requirements for accelerated thermal radiation computation by solver version.
- Thermal-flow data exchange files
  The thermal and flow solvers in Simcenter 3D and Simcenter Femap create multiple thermal-flow data exchange files described on the following page.
Thermal Solver
Contains thermal solver related guides, such as the TMG reference manual, thermal solver customization guide, and error message list.
Flow Solver
Contains flow solver related guides, such as the reference and customization guides.
TMG Critical Fixes
Maya HTT strives to release the best thermal-flow solver by continually updating and fixing critical issues and releasing monthly updates to the solver.
Legal notice

Use a TMG solver patch from a separate location

Use this method to keep the TMG solver patch in the installation unchanged and load the patched solver from a separate location.

From the Add Ons downloads page on Siemens Support Center, download the latest TMG solver patch.
Extract the downloaded tmg folder to a separate location, for example: C:\TMG\<patch_version>\tmg.
Set the UGII_TMG_DIR environment variable to the location of the extracted tmg folder, for example: UGII_TMG_DIR=C:\TMG\<patch_version>\tmg.
To verify the value of the environment variable from a Windows Command Prompt, enter:
```
echo %UGII_TMG_DIR%
```
After creating or modifying UGII_TMG_DIR, close and restart for the change to take effect.
To verify that the expected TMG version and solver location are being used, run a small thermal-flow solution and check the information in the solution log file.

Note:

UGII_TMG_DIR specifies the location of the TMG thermal-flow solver. It does not redirect or update the integration components under <Simcenter 3D installation>\NXCAE_EXTRAS\tmg. If the patch instructions in README.txt require updating the integration components, update the applicable files according to the instructions provided with the patch.