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Lattice Boltzmann Method(LBM) has achieved considerable success on simulatingcomplex flows. However, how to impose correct boundary conditions on thefluid-solid interface with complex geometries is still an open question. Herewe proposed a velocity interpolation based bounce-back scheme where the ideasof interpolated bounce-back and non-equilibrium extrapolation are combined. Theproposed scheme is validated by several well-defined benchmark cases. It isshown that the proposed scheme offers a better accuracy at high Reynolds numberand less dependency on solids positions which may crucial in many engineeringand science applications.

Velocity interpolation based Bounce-Back scheme for non-slip boundary condition in Lattice Boltzmann Method