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Family of parametric second-order boundary schemes for the vectorial finite-difference-based lattice Boltzmann method
Xi Zhang1, Minfu Feng1, Jin Zhao2
1College of Mathematics, Sichuan University, Chengdu 610065, China.
Abstract:
In this paper, we propose a family of parametric second-order boundary schemes for the vectorial finite-difference-based lattice Boltzmann method (FD-LBM), which consist of convex combinations. The FD-LBM unifies several different numerical schemes for the Navier-Stokes equations, and thereby these boundary schemes are naturally applicable for the standard LBM. The accuracy of the boundary schemes is independent of the boundary location, and it is validated by several numerical experiments, two- and three-dimensional flow problems, with straight and curved boundaries.
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