> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ntop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Transient Thermal Analysis

Perform a transient heat conduction analysis on an FE Model subject to temperature and heat flux boundary conditions.

### Inputs

| Name                | Type                                                                                | Description                                                                                                                                                                                                                                                                                        |
| ------------------- | ----------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Model               | [FE Model](../../../../block-documentation/types/fe-model)                          | The finite element model.                                                                                                                                                                                                                                                                          |
| Load case           | [Boundary Condition List](../../../../block-documentation/types/boundary-condition) | The restraints and applied thermal loads.                                                                                                                                                                                                                                                          |
| Initial temperature | [Temperature Field](../../../../block-documentation/types/temperature-field)        | The initial temperature of the domains in the FE Model.                                                                                                                                                                                                                                            |
| Duration            | [Scalar](../../../../block-documentation/types/scalar)                              | Duration of the simulation                                                                                                                                                                                                                                                                         |
| Initial time step   | [Scalar](../../../../block-documentation/types/scalar)                              | Initial time step for the transient analysis. The program will control the step size for subsequent steps.                                                                                                                                                                                         |
| Save increment      | [Integer](../../../../block-documentation/types/integer)                            | Controls the amount of data that is stored and accessible after the simulation completes. The default value of 1 will save results for all increments, whereas a value of 0 will save only the first and last increment. For any value, N > 1, the block will save results for every N increments. |
| Fixed time step     | [Bool](../../../../block-documentation/types/bool)                                  | Option to fix the initial time step for the entire analysis. If this option is unchecked, the solver uses an automatic time-stepping scheme that varies the initial time step based on the stability of the analysis.                                                                              |

### Outputs

| Type                                                                                                 |
| ---------------------------------------------------------------------------------------------------- |
| [Time Dependent Thermal Result](../../../../block-documentation/types/time-dependent-thermal-result) |