A Boundary Reconstruction Scheme for Lattice Boltzmann Flow Simulation in Porous Media
نویسنده
چکیده
In this paper, a novel boundary reconstruction scheme is developed utilizing the reinitialization scheme of the level set method. The proposed scheme transfers usual digitally defined step-like boundary data to continuously smooth surface data. It is confirmed that the lattice Boltzmann simulation by the interpolated bounce-back boundary condition with the present scheme well reproduces the drag coefficients of a cylinder and a sphere. Then this numerical scheme is applied to simulate flows in porous media which have body-centered-cubic structures. The results indicate that the present scheme improves the shape representation and thus the prediction accuracy with less sensitivity to grid resolutions.
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