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5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
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Modified Rhie-Chow / Piso Algorithm For Collocated Variable Finite Porous Media Flow Solvers, Markus Nordlund
Modified Rhie-Chow / Piso Algorithm For Collocated Variable Finite Porous Media Flow Solvers, Markus Nordlund
5th International Conference on Porous Media and Their Applications in Science, Engineering and Industry
A modified Rhie-Chow/ PISO segregated algorithm is proposed, whic by construction avoids the development of spurious oscillations in the solution fields for low Mach number flow in heterogeneous, isotropic porous media. The collocated variable finite volume based algorithm modifies the commonly used Rhie-Chow interpolation to maintain a strong pressure-velocity coupling when large discontinuous implicit momentum sources are present. This Redistributed Resistivity PISO algorithm is based on a redistribution of the flow resistivity over the neighboring grid cells to the discontinuity. The proposed algorithm is successfully verified against published data for the velocity and pressure for two cases. The robustness of …