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Problems coupling mass transfer physics to two phase laminar flow (phase field)
Posted May 20, 2013, 5:27 p.m. EDT Computational Fluid Dynamics (CFD), Microfluidics, Chemical Reaction Engineering Version 4.3a, Version 4.3b 2 Replies
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I am in the process of coupling Transport of Diluted Species to Two Phase Laminar Flow (Phase Field) and having some difficulty. I was wondering if anyone could possibly help me out.
The scenario is a water droplet resting on a surface and it is being cooled by air. I hope to simulate the evaporation of water into the air. I expect to see deformation of the water droplet (mass is tracked by the Phase Field, correct?) and a water concentration profile as it evaporates.
The problem I am having is that the volume fraction of the water goes to zero very early on in the simulation. This appears to be a numerical error to me, but I cannot locate what is causing it. I’ve tried increasing the mesh density around the droplet, which did help control the volume fraction marginally but I still feel that the physical results aren’t making sense. Shouldn’t the plot showing the water concentration profile show a reduction in volume as well?
I would greatly appreciate any input.
Best regards,
Alex
P.S. Model is attached, but without solutions because the output file size was too big.
Attachments:
Hello Alexander Sinkevich
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have you got the solution for your problem.
i am really stuck in a evaporation model. culd you please help me.
thanks in advance
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Dear COMSOL experts users,
I am a biginner with COMSO and I am in the process of coupling Transport of Diluted Species to Laminar bubbly flow and having some difficulty. I was wondering if anyone could possibly help me out.
Best regards