| 圆柱绕流复杂尾迹的实验研究 |
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| 引用本文： | 刘明侯,Zhou Y,陈义良,So R.M.C. 圆柱绕流复杂尾迹的实验研究[J]. 中国科学技术大学学报, 2000, 30(3): 318-324 |
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| 作者姓名： | 刘明侯 Zhou Y 陈义良 So R.M.C |
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| 作者单位： | 1. 中国科学技术大学热科学与能源工程系,合肥,230027
2. 香港理工大学机械工程系,香港 |
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| 基金项目： | 中国科学技术大学青年基金资助项目 |
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| 摘 要： | 本实验研究由两个或三个并排圆柱体所产生的复杂尾迹。其中一个圆柱被加热，流体尾迹中最高温度比环境温度高１℃左右，对湍流场影响很小。用Ｘ热线和一根冷线相结合的三线探头分别测量速度和温度的脉动。以一个圆柱尾迹的实验数据为基础，用位置叠加假设来计算复杂尾迹，并与实际测量结果比较，用以检查该假设在圆柱绕流复杂尾迹的适用情况。结果表明，利用位置叠加假设，可以根据该假设的实验结果来对复杂尾迹的平均速度进行描述
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| 关 键 词： | 简单尾迹 复杂尾迹 位置叠加假设 圆柱绕流 实验 |
| 修稿时间： | 1999-09-29 |
Experimental Study on the Complex Wakes of Cylinders |
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| LIU Ming-hou,Zhou Y,CHEN Yi-liang,So R.M.C. Experimental Study on the Complex Wakes of Cylinders[J]. Journal of University of Science and Technology of China, 2000, 30(3): 318-324 |
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| Authors: | LIU Ming-hou Zhou Y CHEN Yi-liang So R.M.C |
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| Abstract: | Turbulent complex wakes generated by two and three cylinders in a side by side arrangement were investigated experimentally to examine the interactions between turbulent simple wakes and their effects on the momentum and heat transport phenomena. The superposition hypothesis is examined for its validity and extent. It is found that the superposition hypothesis is quite valid for the mean field of the complex wake and qualitatively supported by second order velocity. However, discrepancy between measurements and calculations occurs qualitatively and quantitatively for the third order velocity products. |
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| Keywords: | simple wake complex wakes the superposition hypothesis |
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