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absorption in porous media

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Old   November 17, 2008, 11:57
Default absorption in porous media
Marjon van Ginneken
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I am modelling ink impact and absorption in porous media and I was looking at the influence of the grid size on the solution. Refining the grid at first gave similar results (up to 1e-3 s), but as I increased computation time (1e-2 to 1 s) the fine grid ink droplets show sooner equilibrium state than coarse grids. Moreover the absorption and spreading in coarser grids keep continuing in time. Why is this happening? Marjon
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Old   November 17, 2008, 23:37
Default Re: absorption in porous media
michael barkhudarov
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hmmm, not sure. What numerical options (e.g., implicit/explicit) and physical models (surface tension, flow losses in porous medial, capipllary pressure) are you using?
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