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将Ｙａｋｈｏｔ与Ｏｒｓｚａｇ新近提出的ＲＮＧＫ－ε湍流模式推广应用于１８０°强曲率弯道内的湍流分离流动的数值模拟，计算在任意曲线坐标下进行，并采用速度协变分量作为求解变量以保证计算的高度稳定性，控制方程的求解采用通常的控制容积法，文中给出了详细的数值计算结果，并与实验结果进行了比较，结果表明，ＲＮＧＫ－ε湍流模式能有效地模拟有强曲率影响的湍流分离流动，展示了这一模式在工程湍流计算中的前景
The newly proposed RNGK-ε turbulence model proposed by Yakhot and Orszag is applied to the numerical simulation of turbulent separation flow in a 180 ° strong curvature curve. The calculation is performed under arbitrary curvilinear coordinates and the velocity covariant component is used as the solution variable to ensure the calculated The results show that the RNGK-ε turbulence model can effectively simulate the effect of strong curvature Turbulent flow separation shows the prospect of this model in engineering turbulence calculation