Step 6: Phases

Phases

1.   Define air as the primary phase.

Phases phase-1 - Primary Phase Edit...

(a)   Enter air for Name.

(b)   Ensure that air is selected from the Phase Material drop-down list.

(c)   Click OK to close the Primary Phase dialog box.

2.   Define solids (glass beads) as the secondary phase.

Phases phase-2 - Secondary Phase Edit...

(a)   Enter solids for Name.

(b)   Select solids from the Phase Material drop-down list.

(c)   Enable Granular.

(d)   Retain the default selection of Phase Property in the Granular Temperature Model group box.

(e)   Enter 0.0005 m for Diameter.

(f)   Select syamlal-obrien from the Granular Viscosity drop-down list.

(g)   Select lun-et-al from the Granular Bulk Viscosity drop-down list.

(h)   Select constant from the Granular Temperature drop-down list and enter 1e-05.

(i)   Enter 0.6 for the Packing Limit.

(j)   Click OK to close the Secondary Phase dialog box.

3.   Define the interphase interactions formulations to be used.

Phases Interaction...

(a)   Select syamlal-obrien from the Drag Coefficient drop-down list.

(b)   Click the Heat tab, and select gunn from the Heat Transfer Coefficient drop-down list.

  The interphase heat exchange is simulated, using a drag coefficient, the default restitution coefficient for granular collisions of 0.9, and a heat transfer coefficient. Granular phase lift is not very relevant in this problem, and in fact is rarely used.

(c)   Click OK to close the Phase Interaction dialog box.