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Unsteady field advected by steady velocity field

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Old   November 15, 2015, 20:07
Default Unsteady field advected by steady velocity field
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Thomas Oliveira
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Dear all,

I want to solve the time-dependent advection-diffusion equation of a concentration that is advected by a velocity field which is the steady-state solution of a creeping flow problem. I need to solve both for the steady-state velocity field and the time-dependent concentration field, but I am not sure what is the best strategy to do that using OpenFOAM.

One approach would be to solve a single time-dependent problem involving both fields, as if both were unsteady. However, I guess that solving first for the velocity and then for the concentration would be computationally more efficient that recomputing the steady-state velocity field at every timestep.

Could you please share you thoughts on it?

Thank you for your attention.
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Old   November 16, 2015, 02:53
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Anton Kidess
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Compute velocity field with simpleFoam, concentration transport with scalarTransportFoam.
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Old   December 28, 2015, 14:42
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Thank you, Anton. It worked.
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