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A Note on Heat Transfer Enhancement of Impinging Jets

DOI: 10.1615/ICHMT.2004.IntThermSciSemin.1230
pages 969-974

D. W. Zhou
Institute of Engineering Thermophysics, Chinese Academy of Sciences B12, Zhongguancun, Haidian District, Beijing 100080, P.R. China

Abstract

The variations of flow structure and heat transfer characteristics of impinging gas jets with respective to mesh solidity are compared for two mesh screen locations at smaller nozzle-to-plate spacing. Results show that the uniform incoming flow structure produces higher heat transfer rate in the impingement region. The heat transfer enhancement largely depends on nozzle-to-plate spacing, mesh solidity and jet Reynolds number. The mechanism is analyzed in light of field synergy principle.

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