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Journal of Enhanced Heat Transfer
Fator do impacto: 0.562 FI de cinco anos: 0.605 SJR: 0.211 SNIP: 0.361 CiteScore™: 0.33

ISSN Imprimir: 1065-5131
ISSN On-line: 1026-5511

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Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.v18.i3.10
pages 177-190

THERMALLY-INDUCED OSCILLATORY FLOW AND HEAT TRANSFER IN AN OSCILLATING HEAT PIPE

Wei Shao
Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO 65211
Yuwen Zhang
University of Missouri, Columbia, MO 65201, USA

RESUMO

Thermally-induced oscillatory flow and heat transfer in a U-shaped minichannel - a building block of an Oscillating Heat Pipe (OHP) - is modeled by analyzing evaporation and condensation in the heating and cooling sections, effect of axial variation of surface temperature on sensible heat transfer between the liquid slug and the minichannel wall, as well as initial temperature and pressure loss at the bend on the heat transfer performance. The oscillatory flow of the liquid slug is driven by variations of pressures of the vapor plug due to evaporation and condensation. The sensible heat transfer coefficient between the liquid slug and the minichannel wall is obtained by analytical solution for a laminar liquid flow and by empirical correlations for a turbulent liquid flow.


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