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primary/secondary phase in VoF condensation model |
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September 23, 2019, 23:55 |
primary/secondary phase in VoF condensation model
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#1 |
Member
Soumitra Vadnerkar
Join Date: Aug 2018
Posts: 70
Rep Power: 8 |
I am using VoF model with Evaporation-Condensation Lee's model to simulate a simple condensation of water vapor to liquid water in a tube having constant wall temperature far below saturation temperature of the fluid.
When I put vapor, which is inlet to the tube, as primary phase, it's temperature never drops below saturation temperature. The temperature drop across tube length follows a nice curve till saturation temperature and then follows a straight line for the saturation temperature. When I put liquid as primary phase, I see a perfect temperature drop that does go below saturation temperature, but I see very very negligible liquid volume fraction (~10^-5). The solving scheme is transient, implicit coupled volume fraction scheme. Can you suggest me how can I avoid stalling of temperature drop at saturation temperature and thus have a considerable liquid volume fraction? |
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December 16, 2019, 11:17 |
Same problem
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#2 |
New Member
Prabhuram
Join Date: Nov 2018
Posts: 1
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I am thinking of using air as primary phase and both the others as secondary phases. So that, there is no transisition in the primary phase and it just acts as a carrier for the other phases
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December 16, 2019, 11:41 |
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#3 |
Member
Soumitra Vadnerkar
Join Date: Aug 2018
Posts: 70
Rep Power: 8 |
Do you mean a three phase flow?
Let me know if it works. I may also give a try. Thanks |
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condensation, evaporation condensation, primary-secondary fluid, vof model |
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