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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 guide
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.
Compiling, linking, and debugging
Calling Fortran subroutines from C

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 theory
  Describes the theory and methods of the thermal solver.
- Thermal solver API guide
  Allows you to create or add functionality to enhance the thermal solver capabilities.
  - Introduction
  - Supported compilers
  - User written subroutines
    This section describes two types of user-written subroutines.
    - USER1 subroutine
    - Interacting with the thermal solver
    - USERF subroutine
    - Specific examples
    - Subroutine and function definitions
    - Compiling, linking, and debugging
      - Development and debugging user-written subroutines
        This section provides information that is helpful during the development and testing of subroutines.
      - Compiling and linking in dynamic mode
      - Compiling and linking in static mode
      - Calling Fortran subroutines from C
        Implement user-written subroutines in C
        Workflow for calling user-written subroutines in C
  - Plugin functions in expressions

Calling Fortran subroutines from C

You can use the C language to customize a user-written subroutines and call routines originally written in Fortran language. C and Fortran interoperability is successful when data types are matched appropriately, arguments passed correctly, the code linked properly and the executable runs without error.