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Divergence in 3 phase granular flow due to granular temperature, density differences

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Old   December 12, 2018, 10:20
Default Divergence in 3 phase granular flow due to granular temperature, density differences
Muhammad Ali Uzair
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I am facing problem in convergence of three-phase (2 granular solids) granular flow using eulerian multiphase model.

The problem is, when i use two granular solids with density difference (ie 500 kg/m3 and 2600 kg/m3), the simulations don't converge as residuals for granular temperature diverge and hence continuity as well.

When i use 2 granular solids with almost same densities, there is no problem. I have tried reducing density under-relaxation to 0.1 from 1, still of no use.
Please help. Struck on this issue for over a month.
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convergence, eulerian multiphase model, fluent, granular temperature

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