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CFD modeling of large amount of spheres

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Old   October 23, 2014, 15:03
Default CFD modeling of large amount of spheres
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Shailesh Konda
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I have a packing of 20k spheres in a cube. I would like to carry out CFD analysis over the packing structure. The spheres are at initial temperature of 500K. The cold gas flows from the bottom at 300K. I would like to study temperature profile in such a system. Let me know, which tool should i use which can carry out such large scale simulation. Because meshing such domain becomes very complex.

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Old   October 28, 2014, 14:10
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I think the most efficient approach would to model the bed of spheres as a porous media. You will need to calculate the corresponding porous media coeffients based off the (estimated) pressure drop across the bed at varying flow rates.

Most codes will allow you to apply a constant temperature or heat generation to the porous media zone.
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