A boundary reconstruction scheme for lattice Boltzmann flow simulation in porous media
by K. Suga, T. Tanaka, Y. Nishio, M. Murata
Progress in Computational Fluid Dynamics, An International Journal (PCFD), Vol. 9, No. 3/4/5, 2009

Abstract: A novel boundary reconstruction scheme is developed utilising the reinitialisation scheme of the Level Set Method (LSM). 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 (IBB) Boundary Condition (BC) 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 the body-centred cubic structure. The results indicate that the present scheme improves the shape representation and thus the prediction accuracy is less sensitive to grid resolutions.

Online publication date: Fri, 01-May-2009

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