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提出了求解一种二维原始变量湍流模型方程组的预处理方法。应用此方法对驱动方腔内的涡流及天然河流流场作了数值模拟计算，结果表明预处理方法具有较好的稳定性及较快的收敛速度，对天然河流流场的计算只有实用价值。
A method of pretreatment of a two-dimensional turbulence model equations with original variables is proposed. The results show that the pretreatment method has better stability and faster convergence rate, and has only practical value for the calculation of the natural river flow field.