Modeling > Modeling Radiation > Modeling Thermal Radiation > Modeling Gray Thermal Radiation > Selecting the Gray Thermal Radiation Model
Selecting the Gray Thermal Radiation Model
To select the Gray Thermal radiation model:
- In the Physics Model Selection dialog, select a space model (Axisymmetric, Three Dimensional or Two Dimensional) from the Space group.
- Select the Radiation model in the Optional Physics Models group. The Gray Thermal Radiation model may now be selected from the Optional Physics Models group.
Following its selection, the Physics Model Selection dialog will look as shown below.
Note that a further selection of one of Surface to Surface Radiation, Discrete Ordinates Radiation or Viewfactors Calculator is required for the Gray Thermal Radiation model. A prerequisite for the S2S and DO radiation models is that an energy model be activated.
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