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-   -   Velocity inlet (http://www.cfd-online.com/Forums/fluent/28025-velocity-inlet.html)

Max November 17, 2000 02:52

Velocity inlet
 
i'm doing the simulation on 2 phase(water & air)flow in a horizontal pipe.which phase should i set as primary phase?why? during the setting of boundary condition, the velocity magnitude in velocity inlet is referred to the primary phase velocity or the secondary phase velocity?could anyone please help me to solve my doubt?thank you!

kevin November 17, 2000 17:30

Re: Velocity inlet
 
According to the manual, the phase that has the lowest volume fraction must be the second phase.

Max November 18, 2000 11:24

Re: Velocity inlet
 
kevin, then,during the setting of boundary condition, the velocity magnitude in velocity inlet is referred to the primary phase velocity or the secondary phase velocity?

Max

Adel Ataki November 20, 2000 12:45

Re: Velocity inlet
 
Hallo Max, thank you for your help. I think the problem is how to choose the inlet and the outlet boundaries! for the velocity-inlet, pressure-inlet, pressure-outlet you ought to give the Volume-Fractions for the secondary phase! for an outflow you you need to give a Flow Weighting Rate! The quistion is how does VOF model work? Best regards Adel

kevin November 22, 2000 11:36

Re: Velocity inlet
 
Yes Max

Max November 22, 2000 12:10

Re: Velocity inlet
 
kevin, Yes?what is your answer referred to?

Max


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