| 一种各向异性多重尺度的湍流模型 |
| |
| 引用本文： | 郭宽良,陈谦斌.一种各向异性多重尺度的湍流模型[J].应用数学和力学,1991,12(10):917-925. |
| |
| 作者姓名： | 郭宽良 陈谦斌 |
| |
| 作者单位： | 1.中国科学技术大学工程热物理系; |
| |
| 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.
|
| 关 键 词： | 湍流模型 多重尺度 各向异性 |
| 收稿时间： | 1990-10-15 |
A Non-Isotropic Multiple-Scale Turbulence Model |
| |
| Guo Kuan-Hang.A Non-Isotropic Multiple-Scale Turbulence Model[J].Applied Mathematics and Mechanics,1991,12(10):917-925. |
| |
| Authors: | Guo Kuan-Hang |
| |
| Institution: | 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. |
| |
| 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. |
| |
| Keywords: | turbulence model multiple-scale non-isotropic |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《应用数学和力学》浏览原始摘要信息 |
| 点击此处可从《应用数学和力学》下载免费的PDF全文 |
|
