COMPUTATION OF INCOMPRESSIBLE FLUID FLOW WITH BGK METHOD
用BGK格式计算不可压缩流场

In the present paper,the basic idea of BGK method is introduced in detail and extended in thenumerical simulation of incompressible fluid flow. First, the BGK methodis used in cavity flow, where the numerical results are compared withGhia's results. In the computation, the parameters, such as Mach number,inner freedom degree K, and the boundary conditions are selected. Thecomparison shows that the present numerical results agree to the Ghia'sresults, which have higher accuracy. At the same time, this method isapplied for simulation of backward facing step flow. The results arecompared with experimental data. The comparisons show that the BGKmethod is a powerful tool in the numerical simulation of incompressiblefluid flow. The numerical experience shows that this method is easilyparallelized, it is available to be used in unstructured grid systemand multi-dimensional problem. Therefore it is hopeful method in CFD.