maximum resolution (# of voxels) of OpenLB

[Krongrath]

Hi,

I plan to run a 3D LB simulation for a porous media. The pore of this media is a collection of random spheres with different sizes. I would like to get your help answering these questions.

1) What is the maximum numbers of voxels that OpenLB can handle for 3D simulation?
2) I would like to keep the maximum diameter of the spheres to be 1/10 of the entire sample block. What would be the reasonable minimum diameter given the maximum numbers of voxels from the previous question? I know that I can technically go down to one voxel but I would like to get opinions from the developers.

Thank you in advance,
Krongrath

[mathias]

Dear Krongrath,

1/ Actually, there is no limit but for the used hardware. The bigger the used maschine the bigger the simulation you can run. We do simulate about 1 billon cells on about 1000 cores.
2/ I would run a convergence study to answer the question. Chosing one fixed geometry and solve it by varying the resolution. Then, you will know what resultion gives you what error.

BEst
Mathias

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