Ansys Learning Forum Forums Discuss Simulation Fluids Coarse graining in Rocky Reply To: Coarse graining in Rocky

Saeed
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Thank you for you answer. 

1- My question is in coarse graining , ideally, the original size of the particle should be smaller or the size of the particle mutiplied by coarse graining factor should be smaller than CFD cell ?

2- in Rocky particle tab, after adding particles, its pososity can be defined too( the proportion of empty space in a material) .

in density simulation, particles are agglomorating at some parts or moving in a way which does not match the experiments and does not make sense and in porosity simulation, particles are disappearing from the system. But there is no converngence issue. 

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