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| 扭曲管传热性能数值模拟与实验研究 | |
| 引用本文： | 杨蕾,朱冬生,曾力丁,张迎恺,高莉萍.扭曲管传热性能数值模拟与实验研究[J].化学工程,2010,38(1). |
| 作者姓名： | 杨蕾 朱冬生 曾力丁 张迎恺 高莉萍 |
| 作者单位： | 1. 华南理工大学,化学与化工学院,传热强化与过程节能教育部重点实验室,广东,广州,510640 2. 华南理工大学,化学与化工学院,传热强化与过程节能教育部重点实验室,广东,广州,510640;华东理工大学,机械与动力学院,上海,200237 3. 华东理工大学,机械与动力学院,上海,200237 4. 中国石化工程建设公司,北京,100101 |
| 摘 要： | 为了研究扭曲管强化传热性能,通过建立模型数值模拟和实验研究相结合的方法对扭曲管及具有相同截面形状的普通椭圆管的传热性能进行了对比分析。研究了扭曲管和椭圆管管内流体努塞尔数Nu,压力降Δp和管内综合性能评价因子η随雷诺数Re的变化情况,在Re为800—2 000时,扭曲管管内Nu是普通椭圆管的2—3倍,综合传热性能是椭圆管的1.5—2倍。得出了扭曲管可以很好地加剧管内流体湍流、强化管内传热,特别适用于管内流体在低雷诺数范围内的传热,是一种十分高效的强化传热管。 |
| 关 键 词： | 扭曲管 椭圆管 数值模拟 强化传热 |
Numerical simulation and experimental research on heat transfer performance of twisted tube |
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| YANG Lei,ZHU Dong-sheng,ZENG Li-ding,ZHANG Ying-kai,GAO Li-ping.Numerical simulation and experimental research on heat transfer performance of twisted tube[J].Chemical Engineering,2010,38(1). | |
| Authors: | YANG Lei ZHU Dong-sheng ZENG Li-ding ZHANG Ying-kai GAO Li-ping |
| Affiliation: | 1.The Key Lab of Enhanced Heat Transfer and Energy Conservation of Ministry of Education;School of Chemistry and Chemical Engineering;South China University of Technology;Guangzhou 510640;Guangdong Province;China;2.School of Mechanical and Power Engineering;East China University of Science and Technology;Shanghai 200237;3.SINOPEC Engineering Incorporation;Beijing 100101;China |
| Abstract: | The heat transfer performance of twisted tube was researched by numerical simulation and experimental research, and compared with that of normal elliptic tube with the same size. The change trend of Nusselt number (Nu), pressure drop Δp, the comprehensive function evaluation factor(η), and Reynolds number (Re) of inner-tube liquid was researched in twisted tube and elliptic tube. When the Re is between 800 and 2 000, the inner-tube liquid Nu of twisted tube is 2-3 times more than that of elliptic tube, and the heat transfer performance of twisted tube can be enhanced by 1.5-2 times that of elliptic tube. The results show that the twisted tube can greatly enhance the onflow and the heat transfer of tube-side liquid, which performs especially well when the Re of tube-side is small. The twisted tube is a high efficiency heat transfer tube. |
| Keywords: | twisted tube elliptic tube numerical simulation heat transfer enhancement |
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