Step 5: Phases

Phases

1.   Specify liquid water as the primary phase.

Phases phase-1 Edit...

(a)   Enter liquid for Name.

(b)   Retain the default selection of water from the Phase Material drop-down list.

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

2.   Specify water vapor as the secondary phase.

Phases phase-2 Edit...

(a)   Enter vapor for Name.

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

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

3.   Enable the cavitation model.

Phases Interaction...

(a)   Click the Mass tab.

i.   Set Number of Mass Transfer Mechanisms to 1.

ii.   Ensure that liquid is selected from the From Phase drop-down list in the Mass Transfer group box.

iii.   Select vapor from the To Phase drop-down list.

iv.   Select cavitation from the Mechanism drop-down list.

  The Cavitation Model dialog box will open to show the cavitation inputs.

a.   Retain the default settings.

b.   Retain the value of 3540 ${\rm Pa}$ for Vaporization Pressure.

  The vaporization pressure is a property of the working liquid, which depends mainly on the liquid temperature. The default value is the vaporization pressure of water at a temperature of 300 ${\rm K}$.

c.   Click OK to close the Cavitation Model dialog box.

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