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Concentration overshoots/undershoots
Posted Feb 8, 2012, 6:45 a.m. EST Porous Media Flow Version 4.2a 0 Replies
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Problem Encountered:concentration over/under-shoots
I am working with Species Transport in Porous Media(chpm) interface. Inlet concentration(1169.3mol/m3) is given at bottom boundary with some fixed velocity in the z-direction(vertical). During the course of simulation concentration overshoots and undershoots are observed always.
What I have noticed is that for this interface no stabilization option appears in the interface. Because this interface is related to convection-diffusion-dispersion so chance of instability but there is no option available for stabilization of this interface.
May you like to advise about this problem how to handle it. Much better if COMSOL management make changes to let appear the Stabilization option for this interface.
Best Regards,
Nawaz Ahmad
KTH
Hello Nawaz Ahmad
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