湍流模型在浮力回流中的应用与其发展

The Application and Development of Turbulence Model in Buoyance Back-flow

通过湍浮力回流的数值模拟计算,提出了扩展的k—ε湍流模型、双流体湍流模型及简化的湍流应力代数模型。这些模型的计算结果与实测值符合较好,其中双流体模型在模拟温跃层温度突变现象中与实际情况较为一致。

The extended K-e turbulence model, bi-fluid trubulence model and simplified turbulence stress algebraic model are presented based on the calculation of numerical simulation of turbulent buoyance back-flow. The calculational results of the models are in good agreement with measured data. The bi-fluid model coincides well with the real phenomenon in the simulation of temperature jump in thermodine.