|March 18, 2010, 09:40||
VOF Volume fraction in Velocity inlet
Join Date: Mar 2010
Posts: 1Rep Power: 0
I am using a VOF model for the simulation of a diphasic flow entering a pipe and then spilled in a tank. The entry of the diphasic flow is defined as a velocity inlet. The volume fraction of the velocity inlet in fixed to 0,3. Convergence is ok. Moreover, i saw different works where the volume fraction of the velocity inlet is different from 1 or 0.
Nevertheless, i read in an Ansys document that for velocity inlet, only one phase can enter; therefore, only one phase can have the inlet volume fraction set to 1 and nonzero inlet velocity.
So, can somebody help me about this? Is it allowed and physically correct to impose a volume fraction of 0,3 to a velocity inlet with the vof model?
Thank you very much for your help,
|March 18, 2010, 12:53||
Join Date: Mar 2009
Location: Frankfurt, Germany
Posts: 729Rep Power: 12
So this does not make sense.
You want to set up 30% of the inlet with phase one and 70% of the inlet with phase two? Am I guessing right?
I would split up the inlet into two (30%/70%) and define the VOF-variable to 0 at the one and 1 at the other.
Schrödingers wife: "What did you do to the cat? It's half dead!"
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