An Efficient Lattice Boltzmann Model for Steady Convection-Diffusion Equation

摘要

In this paper, an efficient lattice Boltzmann model for n-dimensional steady convection-diffusion equation with variable coefficients is proposed through modifying the equilibrium distribution function properly, and the Chapman-Enskog analysis shows that the steady convection-diffusion equation with variable coefficients can be recovered exactly. Detailed simulations are performed to test the model, and the results show that the accuracy and efficiency of the present model are better than previous models.