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February 16, 2023, 05:34 |
Convergence Problems with Wall adhesion
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Join Date: Jul 2019
Posts: 23
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I am simulating the transient heat transfer due to condensation effects by applying the lee model.
I am considering two phases with the eulerian approach: steam and liquid water When the "wall adhesion" model is activated the mass of the liquid increases exponentially after a certain time--> leading to absolut wrong mass in the system. When it is deactivated everything looks fine, no unrealistic results. But less condensate adhere to the surfaces. Has anyone experinced something similar? I am using the CSS surface tension model. Decreasing the time step size (0.01 ->0.005 s) helped just for a few hundret time steps. This problem occured only with a finer BL resolution. So refining it further would not help I guess. The problem with a rougher resolution is the underprediction of the adhesion forces |
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condensation, continuity error, wall adhesion |
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