MPPICFoam crashes when particles interact with obstacle
Hey,
While running a spray case with MPPIC Foam, I get the following stack trace after some time iterations. I'm not really sure where the error lies here: Code:
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MPPICFoam crashes when particles interact with obstacle
Hey everyone,
I'm using OF 17 and the MPPICFoam solver to solve a simple Euler-Langrange spraying of particles on an inclined plate in my domain. Frustratingly, the simulation crashes just about when (I can see in post-processing) the particles come close enough to the plate in the middle. I believe the problem lies with the kinematicCloudProperties file attached below, but I'm not exactly sure what I should play with. Most changes I've made were with the patchInteractionModel but that's not helped so far Code:
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Quick answer: I'm not familiar with this solver, but there have been recent reports that leads me to believe that there might be one or two flaws in it. And from the dictionary file you provided, I can't see anything terribly wrong.
So, my suggestions:
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hi,
i'm having nearly the same issues, i'm trying with explicit formulation and at least the simulation seems to last longer, however in some regions i have strong overpacking. Maybe this is the cause of the implicit divergence/crash. Does anyone had the same feedback? |
Hi all, in OF7 i solved this by understanding the physical meaning of pS parameter for implicit packing model.
It seems that is quite dependent from your particle type. value of 5 is mainly low for other powders and it can easily lead to overpack (above alphamax). I suggest to adjust that value up to 200 or more according to your particles sizes and density. If anyone knows a way to calculate pS from experimental testing it would be great. Bye |
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