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Solve 1D-diffusion equation on each individual 3D cell

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Old   July 1, 2021, 20:52
Default Solve 1D-diffusion equation on each individual 3D cell
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I want to solve a 1D-diffusion equation on every individual cell on my 3D mesh.
(I have 3 regions, and I want this submodel to be solved in 2 of the 3.)
I was thinking of using submesh, but it seems that selected cells are all connected which is not my case.
I want all cells to be independent while the 1D-diffusion problem is being solved.

Any good ideas?
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multi regions, openfoam 2006, sub model

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