本文探讨了一种求解二维原始变量湍流模型方程组的预处理的方法。依据这种预处理方法，采用交错网络和对角化隐式近似因子分解格式就驱动方驱动腔进行了数值模拟。数值结果表明，这样的预处理可适当放宽时间步长，加快数值的收敛 This paper discusses a method for solving two-dimensional turbulence turbulence model equations pretreatment. According to this preprocessing method, the driving cavity is numerically simulated by using the staggered network and the diagonalized implicit approximate factorization format. Numerical results show that such pretreatment can be appropriate to relax the time step, speed up the numerical convergence