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简要介绍ＢＧＫ方法的基本思想，数值方法及其对不可压缩流场数值计算的推广．然后详细介绍将ＢＧＫ方法应用于平面方框流的结果，将其结果与Ｇｈｉａ的结果进行了详细的比较．本方法还用来模拟后台阶流动，所得结果与相应的实验数据进行比较．以上比较表明本方法的有效性，同时也确定在计算不可压缩流体时参数的正确选择．
Briefly introduce the basic idea of BGK method, numerical method and its application to numerical calculation of incompressible flow field. Then, we introduce the BGK method in detail and compare the result with Ghia’s results in detail. The method is also used to simulate the backstepping flow and the results obtained are compared with the corresponding experimental data. The above comparison shows the effectiveness of the method and also determines the correct choice of parameters when calculating incompressible fluids.