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34.3.13 Define/DTRM Rays...

The Define/DTRM Rays... menu item opens the DTRM Rays dialog box.

DTRM Rays Dialog Box

The DTRM Rays dialog box allows you to define the rays used by the discrete transfer radiation model (DTRM). It opens automatically when you click on OK after selecting the Discrete Transfer model in the Radiation Model dialog box. See Section  13.3.2 for details about the items below.



Clustering   contains parameters for the clusters (see this section in the separate Theory Guide).
Cells Per Volume Cluster, Faces Per Surface Cluster   control the number of radiating surfaces and absorbing cells. (See the explanation in Section  13.3.2.)

Angular Discretization   contains parameters for the ray traces (see this section in the separate Theory Guide).
Theta Divisions, Phi Divisions   control the number of rays being traced. (Guidelines are provided in Section  13.3.2.)

Display Clusters   generates a graphical display of the clusters in the domain. (This item is available only after you have created or read a ray file.)

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