Local heat transfer due to several configurations of circular air jets impinging on a flat plate with and without semi-confinement
作者： M. Fenot , J.-J. Vullierme , E. Dorignac
DOI: 10.1016/J.IJTHERMALSCI.2004.12.002
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摘要: Abstract A technique based on infrared thermography is used to determine the convective heat transfer a flat plate which either single circular air jet or row of jets impinged. The heated using thin-foil technique, enables one impose different fluxes. For each flux, temperature distribution recorded thermographic camera. After that, local transfers and adiabatic temperatures are determined by means linear regression method. Parameters that made vary include injection temperature, Reynolds number, spacing between adjacent jet, distance orifices. In case, two configurations investigated: with other without semi-confinement. Results show independence coefficients effectiveness from within range studied. influence confinement coefficient weak, but it has great impact effectiveness.
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