LaplacianFoam: Solver averages out the in random initial condition -- CFD Online Discussion Forums

August 1, 2013, 01:05

LaplacianFoam: Solver averages out the in random initial condition

hrushi.397

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Hrushi

Join Date: Jan 2013

Posts: 58

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Hi Foamers,

I am trying to solve Allen-Cahn equation in Openfoam.

I modified laplacian foam for this exercise. It requires a special random initial conditions where concentration can have value +1 or -1. I created field in openfoam for 128*128 grids. However, while solving the equation, openfoam seems to average out the phi field to zero in the very first step. I do not understand why this is happening.

Since I am trying to solve it explicitly, I tried programming it in Matlab too. Matlab works fine, but Openfoam does not. Could anyone please help me understand what is happening? I have attached the source code herewith.

P.S. This may be extremely stupid to ask, but is there a way we can debug program in openfoam?

Thanks

Hrushi

Attached Files

laplacianFoam.zip (94.5 KB, 11 views)

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