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Simulating Free Diffusion with MPPIC Solver

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Old   January 19, 2024, 05:31
Default Simulating Free Diffusion with MPPIC Solver
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PengjieZhou
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Hello Foamers.

I would like to simulate the Brownian-motion/free-diffusion using MPPICFoam solver.

When I set the velocity to zero, I cannot see the movement of particles.

Is it possible to simulate free diffusion in OpenFOAM?

How can I set the diffusion coefficient in dictionary?

Thanks in advance,
Pengjie
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