# ThermalΒΆ

Type: | enum |
---|---|

Range: | Cylindrical, Fixed, Flux, Radiating |

Default: | -/- |

Appearance: | optional |

This parameter fixes the type of boundary conditions for thermal simulation projects.

The following boundary types are allowed:

`Fixed`

: Fixes the temperature at the boundary by specifying by specifying a temperature field.`Radiating`

: Implements a Stefan-Boltzmann radiation condition,where is the thermal conductivity (c.f. ThermalConductivity), is the emissivity of the surface (c.f. Emissivity), is the Stefan-Boltzmann constant, and is the temperature of the surrounding heat reservoir.

The Stefan-Boltzmann law depends non-linearly from the temperature It is used in the linearized form,

when used for the linear heat equation.