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TransAT Tutorial Manual 4.5. Spillway
Phases Interactions
In the Phases Interactions tab, the interphase slip models will be defined between the phases.
The first table shown, miscibility, cannot be changed from the default values. Phases of different
states will be immiscible with each other. The drag models will be defined:
• Click
• Select Drag Model in the Interphase Slip Relations drop-down choice.
• Select Tomiyama contaminated for air bubbles dispersed in water (first row, second column).
• Select Clift for water drops dispersed in air (second row, first column).
No relations for lift or wall lubrication will be set, however, surface tension needs to be set
for the tomiyama model.
• Select Surface Tension in the Interphase Slip Relations drop-down choice.
• Set 0.072 as a value for the surface tension.
Figure 4.27: Drag Model Table
c
Ascomp AG Switzerland 181 Version 5.7
