|September 17, 2015, 10:13||
Porous Media model and mesh size
Join Date: Feb 2014
Posts: 3Rep Power: 4
Porous media model can be used in order to avoid to describe explicitly complex geometries (packing,..) which would require really cell consuming mesh discretization.
I get that pressure drop will be calculated from empirically formulation (Ergun) allowing to reproduce the flow resistance that the explicit geometry would provide.
But I can't find any recommendation regarding the size of the mesh inside the porous zone. How coarser can it be ? Is it an important matter as blockage is not physically represented inside the porous zone and a superficial velocity is by default introduced.. What about turbulence phenomena ?
Thanks to enlighten me on this topic
|September 18, 2015, 01:52||
Join Date: Mar 2009
Posts: 67Rep Power: 9
Is there any heat transfer/reaction modelling involve in porous zone while calculation ?
If it is a simple case of flow problem with porous media, keep the uniform cell size as entrance/exit of porous zone. It will control the jump in momentm calculation and will be ease as we provide higher resistance to rest of the direction of flow.
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