雷诺应力模型在三维湍流流场计算中的应用

张雅; 刘淑艳; 王保国

雷诺应力模型在三维湍流流场计算中的应用

1.
北京理工大学机械与车辆工程学院,北京100081
2.
北京理工大学机电工程学院,北京100081

基金项目: 国家自然科学基金资助(50376004);高等学校博士学科点专项基金资助(20030007028)

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出版历程
- 收稿日期: 2004-06-16
- 修回日期: 2004-09-22
- 刊出日期: 2005-08-28

Application of the Reynolds Stress Model to the Calculation of Three-Dimensional Turbulent Flow-Field

1.
The School of Mechanical and Vehicular Engineering, Beijing Institute of Technology,Beijing100081,China
2.
The School of Mechatronic Engineering, Beijing Institute of Technology,Beijing100081,China

摘要

摘要: 从雷诺应力模型出发,通过求解雷诺平均N-S方程组获得三维湍流流场的数值解。计算中比较了多种湍流模式,并进行了相应的流场计算。本文完成了两个典型算例。从算例1的计算结果与实验值比较中发现:采用雷诺应力模型(RSM)计算的三维流场比采用k-ε模型更贴近实验值;算例2采用了RSM模型及三维非结构网格,对一典型内流问题进行了三维流场计算。算例的数值实践表明:采用雷诺应力模型可以有效的计算各向异性的湍流流场;另外,发展非结构网格有助于模拟壁面附近的流动,并节省计算机内存。
- 航空、航天推进系统 /
- 雷诺应力模型 /
- 三维湍流流场 /
- k-ε模型 /
- N-S方程
Abstract: Based on the Reynolds Stress Model, the three-dimensional flow field was numerically simulated using the Reynolds averaged N-S system equations.The flow fields were calculated and compared with the results of several turbulent models.Two typical examples were presented.Comparing numerical results to experimental data,we can find that the numerical results with the Reynolds Stress Model (RSM) are closer to the experimental data than with the Standard k-ε model.Besides,detail flow field of a typical problem was simulated with RSM using three-dimensional unstructured grids.Numerical results show that the Reynolds Stress Model could simulate turbulence anisotropic behavior of the complex three-dimensional flow field.
- aerospace propulsion system /
- Reynolds Stress Model (RSM) /
- three-dimensional turbulent flow-field /
- k-ε model /
- N-S equation