| 基于低雷诺数k-ε双层模型正弦波壁流动的数值模拟 |
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| 引用本文： | 何勇,黄社华,张晓元.基于低雷诺数k-ε双层模型正弦波壁流动的数值模拟[J].武汉大学学报(工学版),2004,37(4):11-15. |
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| 作者姓名： | 何勇 黄社华 张晓元 |
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| 作者单位： | 1. 长江水利委员会勘测规划设计研究院,湖北,武汉,430010
2. 武汉大学水利水电学院,湖北,武汉,430072 |
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| 摘 要： | 正弦波壁近区流动存在顺压和逆压梯度的交替变化,并伴有流动分离现象,难以求其精确数值解.利用TTM方法在整个计算区域生成曲线贴体坐标系,然后运用低雷诺数k-ε双层紊流模型并结合混合有限分析离散格式,对正弦波壁流动进行了成功的模拟.计算结果表明,波壁背流面存在一个椭圆形分离区,分离区长度及近壁压强分布与实验资料和前人计算结果吻合较好.
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| 关 键 词： | 正弦波壁流 贴体坐标 低雷诺数k-ε双层紊流模型 混合有限分析格式 |
| 文章编号： | 1671-8844(2004)04-011-05 |
| 修稿时间： | 2003年2月27日 |
Numerical simulation of sinusoidal hill flow based on low-Reynolds number k-ε two-layer model |
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| HE Yong,HUANG She-hua,ZHANG Xiao-yuan.Numerical simulation of sinusoidal hill flow based on low-Reynolds number k-ε two-layer model[J].Engineering Journal of Wuhan University,2004,37(4):11-15. |
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| Authors: | HE Yong HUANG She-hua ZHANG Xiao-yuan |
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| Abstract: | Sinusoidal hill flow is an interesting phenomenon, but it is difficult to be simulated accurately because of the complex flow separation. In this paper, a body-fitted curvilinear coordinate system is generated in the whole calculating region;then the turbulence is successfully modeled with low-Reynolds number k-ε two-layer model and hybrid finite analysis discrete scheme. It's showed that the numerical results have a good agreement with previous experimental data. |
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| Keywords: | sinusoidal hill flow body-fitted coordinate low-Reynolds number k-ε two layers model hybrid finite analysis scheme |
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