The Radiation in Absorbing-Scattering Media Interface
The Radiation in Absorbing-Scattering Media (rasm) interface (), found under the Heat Transfer>Radiation branch (), is used to model radiative heat transfer inside participating (semi-transparent media) media supposed to be non-emitting.
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: Absorbing-Scattering 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 Absorbing-Scattering Media node to select physics features from the context menu.
In this section:
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Settings for the Radiation in Absorbing-Scattering Media Interface
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Feature Nodes for the Radiation in Absorbing-Scattering Media Interface