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ISSN: 1065-5131 Print
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DOI: 10.1615/JEnhHeatTransf.v12.i1
Pages: 126
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DOI: 10.1615/JEnhHeatTransf.v12.i1.70
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Article price - $35.00 |
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Effect of Mesh Screen on Heat Transfer Enhancement of Impinging Jet
D. W. Zhou
Department of Mechanical Engineering, Pohang University of Science and Technology, San 31, Hyoja-dong, Pohang, 790-784, Korea
Sang-Joon Lee
Department of Mechanical Engineering, Pohang University of Science and Technology, San 31, Hyoja-dong, Pohang, 790-784, Korea
ABSTRACT
An experiment has been carried out to investigate heat transfer enhancement by installing a mesh screen inside of a jet nozzle. The effects of mesh screen location, nozzle-to-plate spacing, and jet Reynolds number on heat transfer augmentation were studied. Results show that mesh screen location and nozzle-to-plate spacing have significant influence on the flow structure and heat transfer of impinging jet. Among three mesh screen locations, the jet with L/d = 0 gives the maximum heat transfer rate. Compared with the case of no screen, the local and average Nusselt numbers in the stagnation region are increased up to 27.13% and 7.42%, respectively.
pages 101-120
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