一种各向异性多重尺度的湍流模型

郭宽良; 陈谦斌

一种各向异性多重尺度的湍流模型

郭宽良¹,
陈谦斌²

1.
中国科学技术大学工程热物理系;
2.
美国亚拉巴马大学享茨维尔校部化学工程系

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出版历程
- 收稿日期: 1990-10-15
- 刊出日期: 1991-10-15

A Non-Isotropic Multiple-Scale Turbulence Model

Guo Kuan-Liang¹,
C. P. Chen²

1.
Department of Engineering Thermophysics, University of Science and Technology of China, Hefei;
2.
Department of Chemical Engineering, University of Alabama in Huntsville, Huntsville, AL 35899, U. S. A.

摘要

摘要: 本文给出了一种适用于复杂湍流流动计算的各向异性、多重尺度的湍流模型(MS/ASM).这种模型对雷诺应力进行直接的模拟,并可模拟湍流流动的多重尺度影响.对自由应力流动、旋转流动和回流的湍流流动的计算表明,它比常用的单重尺度的k-ε模型有明显的改进.由于计算机工作量增加得不多,所以它在工程计算中,具有广泛的应用前景.
- 湍流模型 /
- 多重尺度 /
- 各向异性
Abstract: This paper describes a newly developednon-isotropic multiple-scale turbulence model (MS/ASM) for complex flow calculations. This model focuses on the direct modeling of Reynolds stresses and utilizes split-spectrum concepts to model multiple-scale effects in turbulence. Validation studies on free shear flows, rotating flows and recirculating flows show that the current model performs significantly better than the single-scale k-e model. The present model is relatively inexpensive in terms of CPU time which makes in suitable for broad engineering flow applications.
- turbulence model /
- multiple-scale /
- non-isotropic

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参考文献(22)

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