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Heat Transfer Research
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ISSN Imprimir: 1064-2285
ISSN En Línea: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.2016013856
pages 757-769

HEAT TRANSFER ANALYSIS OF A LIQUID PLUG FLOWING IN A TUBE

H. Wang
Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO 65211, USA
Da Yin
Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO 65211, USA
Hongbin Ma
Marine Engineering College, Dalian Maritime University, Dalian, Liaoning 116026 China; Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, Missouri, 65211, USA

SINOPSIS

In this paper, an analytical solution of temperature and Nusselt number distributions of developing region are derived for a liquid plug flowing in a tube, which is similar to an acceleration or deceleration phase of an oscillating flow of a liquid plug occurring in an oscillating heat pipe (OHP). During the acceleration or deceleration process, the liquid plug can be assumed as the developing region of a fully developed flow. The results show that the Nusselt number of a liquid plug during the acceleration or deceleration process is much higher than that in a fully developed region. The model presented herein will be used to explain how an oscillating flow can enhance fluid flow and heat transfer of a liquid plug in an OHP.


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