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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.
Monthly critical fixes
Lists critical bugs that are fixed monthly for the thermal and flow solvers.
January 2025 critical fixes
January 2025 fixes were published on 22 January 2025. All critical fixes listed here were fixed for versions 2412.3, 2406.8 unless otherwise noted.

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, 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.
- Monthly critical fixes
  Lists critical bugs that are fixed monthly for the thermal and flow solvers.
  - January 2025 critical fixes
    January 2025 fixes were published on 22 January 2025. All critical fixes listed here were fixed for versions 2412.3, 2406.8 unless otherwise noted.
  - December 2024 critical fixes
    December 2024 fixes were published on 17 December 2024.
  - November 2024 critical fixes
    November 2024 fixes were published on 12 November 2024.
  - October 2024 critical fixes
    October 2024 fixes were published on 23 October 2024.
  - September 2024 critical fixes
    September 2024 fixes were published on 19 September 2024.
  - August 2024 critical fixes
    August 2024 fixes were published on 21 August 2024. All critical fixes listed here were fixed for versions 2412.0, 2406.4, 2312.8, 2306.13 unless otherwise noted.
  - July 2024 critical fixes
    July 2024 fixes were published on 10 July 2024. All critical fixes listed here were fixed for versions 2412.0, 2406.2, 2312.7, 2306.12 unless otherwise noted.
  - June 2024 critical fixes
    June 2024 fixes were published on 25 June 2024. All critical fixes listed here were fixed for versions 2412.0, 2406.1, 2312.6, 2306.11 unless otherwise noted.
  - April 2024 critical fixes
    April 2024 fixes were published on 16 April 2024. All critical fixes listed here were fixed for version 2406.0 unless otherwise noted.
  - March 2024 critical fixes
    March 2024 fixes were published on 12 March 2024. All critical fixes listed here were fixed for versions 2406.0, 2312.4, 2306.9 unless otherwise noted.
- 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.
- 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.

January 2025 critical fixes

January 2025 fixes were published on 22 January 2025. All critical fixes listed here were fixed for versions 2412.3, 2406.8 unless otherwise noted.

User Story 89753: Ensure that emitting radiative sources that do not belong to any radiation request do not absorb fluxes from other radiative heating entities when using GPU ray-tracing

Fixed versions: 2412.4

The GPU computed ray tracing calculation method was corrected to ensure that emitting radiative sources not associated with any radiation request do not absorb fluxes from other radiative heating entities. In such cases, these emitting radiative sources are now treated as fully transparent. This change aligns the behavior with the other calculation methods, deterministic and Monte Carlo, but differences in result quantities will be observed.

Bug 101709: Resolve the divergence issue in models that include a Heat Pipe simulation object with optional minimum/maximum operating temperatures and maximum power transport limit parameters

A bug affecting models that include a Heat Pipe simulation object has been resolved. Previously, defining the Minimum Operating Temperature, Maximum Operating Temperature, or Maximum Power Transport Limit optional parameters could result in solver divergence or unphysical temperature results. This issue has now been fixed.

Bug 101710: Resolve a crash in the thermal solver when the name of a Heat Pipe simulation object starts with the letter C

A bug that caused models containing a Heat Pipe simulation object to crash or produce unrelated fatal errors has been resolved. This problem occurred when the object's name started with the letter C or included certain solver-specific keywords. This issue has now been fixed.