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If you are modeling species transport or multiphase flow, the Material Name list will not appear in the
Fluid dialog box. For species calculations, the mixture material for all fluid zones will be the material
you specified in the Species Model dialog box. For multiphase flows, the materials are specified when
you define the phases, as described in Section 24.3.4: Defining the Phases for the VOF Model.

5.2.3 Solid Conditions

A “solid” zone is a group of cells for which only a heat conduction problem is solved; no flow equations
are solved. The material being treated as a solid may actually be a fluid, but it is assumed that no
convection is taking place. The only required input for a solid zone is the type of solid material. You
must indicate which material the solid zone contains so that the appropriate material properties will
be used. Optional inputs allow you to set a volumetric heat generation rate (heat source) or a fixed
value of temperature. You can also define motion for the solid zone. If there are rotationally periodic
boundaries adjacent to the solid zone, you will need to specify the rotation axis. If you are modeling
radiation using the DO model, you can specify whether or not the solid material participates in
radiation.

5.2.4 Defining the Solid Material
To define the material contained in the solid zone, select the appropriate item in the Material Name
drop-down list. This list will contain all solid materials that have been defined (or loaded from the
materials database) in the Create/Edit Materials dialog box. If you want to check or modify the
properties of the selected material, you can click Edit... to open the Edit Material dialog box; this dialog
box contains just the properties of the selected material, not the full contents of the standard
Create/Edit Materials dialog box.

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