> ## 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.

# Volumetric Heat Generation

**What it does:** Applies a total heat generation density to a selected region.

**Common uses:**

* A boundary condition in a thermal analysis.

**Tips:**

* The base units for the Magnitude is g/mm-s^3.

## Example File

Download Example: [Thermal Analysis](https://storage.googleapis.com/files-learn/static/ExtendedBlockDocs/thermal_analysis.ntop)

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Applies a heat generation density to a selected region.

### Inputs

| Name      | Type                                                               | Description                                         |
| --------- | ------------------------------------------------------------------ | --------------------------------------------------- |
| Region    | [Region](../../../../block-documentation/types/region)             | The region of elements the load will be applied to. |
| Magnitude | [Scalar Field](../../../../block-documentation/types/scalar-field) | The amount of heat generation per unit volume.      |

### Outputs

| Type                                                                     |
| ------------------------------------------------------------------------ |
| [Heat Generation](../../../../block-documentation/types/heat-generation) |