The Radiation in Participating Media Interface
The Radiation in Participating Media (rpm) interface (), found under the Heat Transfer>Radiation branch (), is used to model radiative heat transfer inside participating (semitransparent media) media.
This physics interface does not compute the temperature field and requires it as a model input. If the medium does not participate in the radiation (transparent medium), then use The Surface-to-Surface Radiation Interface instead.
The radiative intensity equations defined in participating media domains correspond to a P1 approximation, or to the discrete ordinates method approximation equations, depending on the selected approximation.
When the physics interface is added, these default nodes are added to the Model Builder: Participating Medium and Opaque Surface. In addition, when Discrete ordinates method is selected, Continuity on Interior Boundary is also added. Right-click the main node to add boundary conditions or other features. Then, from the Physics toolbar, add other nodes that implement, for example, boundary conditions. You can also right-click Radiation in Participating Media node to select physics features from the context menu.
In this section:
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Settings for the Radiation in Participating Media Interface
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Feature Nodes for the Radiation in Participating Media Interface
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Predefined Functions for the Radiation in Participating Media Interface