| 弯曲微小通道的流阻特性 |
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| 引用本文： | 杨卫华,张靖周,程惠尔.弯曲微小通道的流阻特性[J].上海交通大学学报,2004,38(10):1651-1655. |
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| 作者姓名： | 杨卫华 张靖周 程惠尔 |
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| 作者单位： | 1. 南京航空航天大学,动力与能源工程学院,南京,210016
2. 上海交通大学,机械与动力工程学院,上海,200030 |
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| 摘 要： | 设计了不同曲率半径、不同几何尺寸的弯曲微小通道，并对其进行了流阻试验，得出了不同几何尺寸的弯曲微小通道的流动特性，并采用N—S方程对流体在弯曲微小通道中的流动特性进行了数值研究．将试验结果与数值计算结果进行了比较，发现它们间存在较大的差异．为了正确解释这种差异，在对流体流动特性分析的基础上引入了粗糙粘度模型．计算结果表明，用粗糙粘度模型计算的结果与试验值吻合较好．
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| 关 键 词： | 弯曲微小通道 流阻特性 粗糙粘度模型 数值模拟 |
| 文章编号： | 1006-2467(2004)10-1651-05 |
| 修稿时间： | 2003年8月8日 |
Study of Flow Characteristics for Curved Microchannel |
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| YANG Wei-hua,ZHANG Jing-zhou,CHENG Hui-er.Study of Flow Characteristics for Curved Microchannel[J].Journal of Shanghai Jiaotong University,2004,38(10):1651-1655. |
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| Authors: | YANG Wei-hua ZHANG Jing-zhou CHENG Hui-er |
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| Institution: | YANG Wei-hua~1,ZHANG Jing-zhou~1,CHENG Hui-er~2 |
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| Abstract: | Some curved microchannels with different curvature radii and geometrical dimensions were designed, and the hydraulic characteristics of them were all tested. Based on the experimental results, different flow characteristics of them were obtained. The flow characteristics of the fluid in curved microchannels were numerically studied by the classical N-S equation. The obvious difference between the results of the numerical calculation and the experimental results was found. In order to explain this kind of difference, a roughness-viscosity model was introduced to the classical N-S equation, and it was found that the prediction of roughness-viscosity model is in agreement with the experimental data. |
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| Keywords: | curved microchannel flow characteristics roughness-viscosity model numerical simulation |
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