| 二维大涡模拟在双流道式污水泵叶轮流场分析中的应用 |
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| 引用本文： | 齐学义,刘在伦,齐冲,郭秀峰,孟繁中. 二维大涡模拟在双流道式污水泵叶轮流场分析中的应用[J]. 水动力学研究与进展(A辑), 2003, 18(3): 289-293 |
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| 作者姓名： | 齐学义 刘在伦 齐冲 郭秀峰 孟繁中 |
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| 作者单位： | 1. 甘肃工业大学流体机械工程系,甘肃兰州,730050
2. 航天部科工集团二院系统实验室,北京,100854 |
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| 摘 要： | 本文采用高斯型滤波函数对Navier—Stokes方程进行滤波处理，再引入亚格子雷诺应力模型推导出了在水力机械内部流场计算中实用的二维大涡模拟方程，并在贴体坐标系下得到计算平面二维大涡模拟方程及其离散形式，编制了数值计算程序，应用该程序计算了双流道式污水泵叶轮内部流场，得到了满意的速度分布和压力分布规律。在此基础上，我们对双流道式污水泵的叶轮进行了优化设计。
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| 关 键 词： | 二维大涡模拟 滤波函数 双流道式污水泵 离散形式 贴体坐标 叶轮 流场分析 速度分布 |
| 文章编号： | 1000-4874(2003)03-0289-05 |
Application of 2-D large eddy simulation to flows in impeller of double-flow-conduits-sewage pump |
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| QI Xue yi ,LIU Zai lun ,QI Chong ,GUO Xiu feng ,MENG Fan zhong. Application of 2-D large eddy simulation to flows in impeller of double-flow-conduits-sewage pump[J]. Chinese Journal of Hydrodynamics, 2003, 18(3): 289-293 |
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| Authors: | QI Xue yi LIU Zai lun QI Chong GUO Xiu feng MENG Fan zhong |
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| Affiliation: | QI Xue yi 1,LIU Zai lun 1,QI Chong 2,GUO Xiu feng 1,MENG Fan zhong 1 |
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| Abstract: | In this paper, Gauss filter function is used to filter the N S equation and the subgrid scale Reynold stress model is introduced to deduce the practical form of LES equation for 2 D flow calculation of hydraulic machine. Then the LES equation and its discrete form in body fitted coordinate system are obtained and the numerical calculation program is developed. The incompressible turbulent flow in double flow conduits sewage pump impeller is computed by using the abovementioned program, and the distribution laws of velocity and pressure in flow field are obtained. Based on this, the designs of double flow conduits sewage pump impeller are optimized. |
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| Keywords: | Large Eddy Simulation (LES) filter function doule flow conduits sewage pump discrete form body fitted coordinate system |
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