| 旋转射流冲击换热液晶显示实验研究 |
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| 引用本文： | 陈玉阳,苑中显,马重芳,俞坚,胡云芝.旋转射流冲击换热液晶显示实验研究[J].工程热物理学报,2003,24(4):646-648. |
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| 作者姓名： | 陈玉阳 苑中显 马重芳 俞坚 胡云芝 |
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| 作者单位： | 北京工业大学环境与能源工程学院,北京,100022 |
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| 基金项目： | 国家重点基础研究发展规划资助项目(No.G2000026304)，教育部留学回国人员科研启动基金 |
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| 摘 要： | 采用热色液晶测温技术对以二氧化碳为工质的稳态射流冲击换热和管内插入扭转带方式的旋转射流冲击换热进行了实验研究。与普通射流相比,旋转射流导致驻点附近区域的换热趋于均匀化。其换热系数在大于某一半径之后高于普通射流,但在驻点附近相对较低。旋转射流对换热的此种影响随雷诺数的增大而减弱。
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| 关 键 词： | 旋转射流 强化传热 液晶显示 |
| 文章编号： | 0253-231X(2003)04-0646-03 |
| 修稿时间： | 2002年12月11 |
EXPERIMENTAL STUDY OF HEAT TRANSFER OF SWIRLING JET IMPINGEMENT WITH LIQUID CRYSTAL TECHNIQUE |
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| CHEN Yu-Yang YUAN Zhong-Xian MA Chong-Fang YU Jian HU Yun-Zhi.EXPERIMENTAL STUDY OF HEAT TRANSFER OF SWIRLING JET IMPINGEMENT WITH LIQUID CRYSTAL TECHNIQUE[J].Journal of Engineering Thermophysics,2003,24(4):646-648. |
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| Authors: | CHEN Yu-Yang YUAN Zhong-Xian MA Chong-Fang YU Jian HU Yun-Zhi |
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| Abstract: | The heat transfer rate of jet impingement with and without swirling has been experimentally studied using thermal liquid crystal technique. The result revealed that the distribution of Nusselt number with swirling tends to be flat in the stagnation region in contrast to the bell shape distribution without swirling. Comparing with the usual case, swirling jet impingement possesses lower heat transfer rate near the center and higher in the wall flow region. This effect is less conspicuous as Reynolds number increases. |
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| Keywords: | swirling jet heat transfer augmentation liquid crystal |
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