| 管内对流换热的场协同分析及换热强化 |
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| 引用本文： | 孟继安,陈泽敬,李志信,过增元.管内对流换热的场协同分析及换热强化[J].工程热物理学报,2003,24(4):652-654. |
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| 作者姓名： | 孟继安 陈泽敬 李志信 过增元 |
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| 作者单位： | 清华大学工程力学系,北京,100084 |
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| 基金项目： | 国家重大基础研究发展规划资助项目(No.G20000263) |
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| 摘 要： | 导出管内湍流换热Nu与局域时均参数的关系式,将对流换热的场协同理论扩展至湍流换热。分析了管内对流换热的特点,并根据场协同理论提出强化湍流换热的方法,发展了一种新型强化换热管一交叉椭圆管,既适合于层流换热强化也适合于湍流换热强化,其强化传热效果显著而流阻较小。
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| 关 键 词： | 对流换热强化 场协同理论 交叉椭圆 |
| 文章编号： | 0253-231X(2003)04-0652-03 |
| 修稿时间： | 2002年12月11 |
FIELD COORDINATION ANALYSIS AND CONVECTION HEAT TRANSFER ENHANCEMENT IN DUCT |
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| MENG Ji-An CHEN Ze-Jing LI Zhi-Xin GUO Zeng-Yuan.FIELD COORDINATION ANALYSIS AND CONVECTION HEAT TRANSFER ENHANCEMENT IN DUCT[J].Journal of Engineering Thermophysics,2003,24(4):652-654. |
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| Authors: | MENG Ji-An CHEN Ze-Jing LI Zhi-Xin GUO Zeng-Yuan |
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| Abstract: | The relation between Nu and the local time-average parameter of turbulent convection heat transfer are derived. It indicates that the field coordination principle of convection heat transfer is available for turbulent convection heat transfer. The features of convection heat transfer in duct are analyzed, and the new method for turbulent convection heat transfer enhancement is presented according to the field coordination principle. A new kind of enhanced heat transfer tube, the cross ellipse tube, is developed. It is effective to enhance heat transfer for both laminar flow and turbulent flow with lower additional flow resistance. |
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| Keywords: | heat transfer enhancement field coordination principle cross ellipse tube |
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