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Thermal Solver
Contains thermal solver related guides, such as the TMG reference manual, thermal API guide, and error message list.
Thermal solver API
Allows you to create or add functionality to enhance the thermal solver capabilities.
User written subroutines
This section describes two types of user-written subroutines.
Interacting with the thermal solver
Access to files
You can access all files from USER1. The following table lists file pre-assigned numbers.

Thermal Solver
Contains thermal solver related guides, such as the TMG reference manual, thermal API guide, and error message list.
- Thermal solver guides
  Maya HTT's thermal solver is included in Simcenter 3D and in Simcenter Femap. This page contains links to thermal solver guides, which help you understand how the thermal solver works.
- Thermal solver reference
  Describes the format and contents of the thermal solver's input and output files
- Thermal solver theory
  Describes the theory and methods of the thermal solver.
- Thermal solver API
  Allows you to create or add functionality to enhance the thermal solver capabilities.
  - Introduction
  - User written subroutines
    This section describes two types of user-written subroutines.
    - USER1 subroutine
    - Interacting with the thermal solver
      - Accessing elements
      - Accessing element properties and geometry
      - Modifying thermal data
      - Getting user values
      - Add conductances
      - Access to files
        You can access all files from USER1. The following table lists file pre-assigned numbers.
    - USERF subroutine
    - Specific examples
    - Subroutine and function definitions
    - Compiling, linking, and debugging
  - Plugin functions in expressions
- Thermal solver error message list
  Lists solver messages that the thermal solver generates to communicate issues with the model or the solve.

Access to files

You can access all files from USER1. The following table lists file pre-assigned numbers.


File	Unit number	Comment
TEMPF	`2`
INPF	`89`	INPF should not be modified.
MODLF	`7`
VUFF	`8`
FMODLF	`16`
<simulation/model name>-<solution/analysis name>_verbose.log	`17`
<simulation/model name>-<solution/analysis name>_report.log	`18`
MODLCF	`56`
GTEMPF	`62`
New files created with an OPEN statement	`20`-`40`	Use a number between 20 and 40.