CFD modeling of large amount of spheres

skonda2 · October 23, 2014, 15:03

Hi!

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.

-Shailesh

jpando · October 28, 2014, 14:10

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.

October 23, 2014, 15:03	CFD modeling of large amount of spheres	#1
skonda2 New Member Shailesh Konda Join Date: Jul 2013 Location: Buffalo, NY Posts: 7 Rep Power: 12	Hi! 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. -Shailesh

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October 28, 2014, 14:10		#2
jpando New Member Join Date: May 2012 Posts: 26 Rep Power: 13	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.