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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.
Interacting with the thermal solver
Accessing element properties and geometry

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
      - 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

Accessing element properties and geometry

Element property can be loaded into user arrays using the subroutine READPROP2. The data is read from the thermal solver file, VUFF. The property data includes:

Material and physical properties.
Element centroid, calculation point locations and surface normal.
Element topology.
Node locations.

All data derived from these values has already been calculated and so changing the data will have no effect on the model, however the data can be used to calculate new information or it can be passed out to an external code.

Calls to READPROP2 contain flags that determine which properties will be returned, therefore it is not necessary to fill all the arrays during a call. If an array is not being filled it can be declared as a non-array variable (effectively an array with size 1).