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在高雷诺数时， Ｒ Ｎ Ｇ ｋε模型在形式上与标准ｋε模型基本相同，其区别主要是在 ε方程中增加了一个附加生成项。当流动快速畸变时该项迅速增大，由此改善了对旋转流、浮力流等较复杂湍流的预报能力。本文应用该模型对液—液旋流分离管中强旋湍流场的数值计算结果表明，其结果虽较标准ｋε模型有所改善，但同实际值间仍存在定性上的不合理性，因此，要在更大程度上改进对液—液旋流分离管中强旋湍流的预报，必须放弃基于各向同性假设的湍流模型，转而采用能够反映各向异性特性的高级模型如代数应力模型或雷诺应力模型等。
At high Reynolds numbers, the R N G k -ε model is essentially the same in form as the standard k-ε model, with the difference being that an additional generative term is added to the ε equation. This term increases rapidly as the flow is rapidly distorted, thereby improving the ability to predict more complex turbulent flows, such as swirl and buoyancy. The numerical results of this model for the strong turbulent flow field in the liquid-liquid swirling separation tube show that although the results are better than the standard k-ε model, there is still a qualitative irrationality with the actual value, Therefore, to further improve the prediction of strong turbulent flow in the liquid-liquid swirling pipe, we must abandon the turbulence model based on the assumption of isotropy, instead, use the advanced model that can reflect the anisotropic properties such as algebraic stress Model or Reynolds stress model.