24.5.5 Including Heat Transfer Effects

To define heat transfer in a multiphase Eulerian simulation, you will need to visit the Phase Interaction dialog box, after you have enabled the energy equation in the Energy dialog box.

Phases Interaction...

1.   Click the Interaction... button to open the Phase Interaction dialog box (e.g., Figure  24.5.4).

Figure 24.5.4: The Phase Interaction Dialog Box for Heat Transfer

2.   Click on the Heat tab in the Phase Interaction dialog box.

3.   Select the desired correlation for the Heat Transfer Coefficient. Note the following regarding the available choices:

gunn   is frequently used for Eulerian multiphase simulations involving a granular phase.

ranz-marshall   is frequently used for Eulerian multiphase simulations not involving a granular phase.

none   allows you to ignore the effects of heat transfer between the two phases

user-defined   allows you to implement a correlation reflecting a model of your choice, through a user-defined function.

4.   Set the appropriate thermal boundary conditions. You will specify the thermal boundary conditions for each individual phase on most boundaries, and for the mixture on some boundaries. See Chapter  7 for more information on boundary conditions, and Section  24.2.9 for more information on specifying boundary conditions for a Eulerian multiphase calculation.

See this section in the separate Theory Guide for more information on heat transfer in the framework of a Eulerian multiphase simulation.