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Journal of Enhanced Heat Transfer
Facteur d'impact: 0.562 Facteur d'impact sur 5 ans: 0.605 SJR: 0.175 SNIP: 0.361 CiteScore™: 0.33

ISSN Imprimer: 1065-5131
ISSN En ligne: 1026-5511

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Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.2012001371
pages 149-159

CORRELATION FOR CONVECTIVE HEAT TRANSFER IN TURBULENT PULSATING FLOW AT LARGE REYNOLDS NUMBER INSIDE CIRCULAR PIPE

Hua Li
Institute of Energy and Power Engineering, Engineering Research Center of Pulse Technology, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
Yingjie Zhong
Institute of Energy and Power Engineering, Engineering Research Center of Pulse Technology, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
Kai Deng
Institute of Energy and Power Engineering, Engineering Research Center of Pulse Technology, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
Zangjian Yang
Institute of Energy and Power Engineering, Engineering Research Center of Pulse Technology, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
Yanjun Hu
Institute of Energy and Power Engineering, Engineering Research Center of Pulse Technology, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
Zengliang Gao
Institute of Process Equipment and Control Engineering, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China

RÉSUMÉ

Convective heat transfer in turbulent pulsating flow was experimentally investigated in this study. Pulsating airflow was produced using a device on the basis of a design idea of on-and-off flow passage. The pulsating flow rate was measured by means of converting a pulsating flow to a steady flow. Both the flow-rate measurement and the generation of oscillatory heat transfer were conducted simultaneously, performing some technical measures. A new dimensionless pulsation amplitude derived from the pressure transfer function in the test section was proposed to describe the amplitude of pulsating flow. It is concluded the averaged Nusselt value of heat transfer in turbulent pulsating pipe flow is one of the functions of the Reynolds number, pulsation frequency, and pulsation amplitude. A correlation for the functional relationship was obtained by means of linear regression analysis of the experimental results, and validated and evaluated by three aspects of discussion. This correlation will be useful for heat transfer calculation of pulsation thermal equipment.


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