The effect of concave surface curvature on heat transfer from a fully developed round impinging jet

The effect of hemispherically concave surface curvature on the local heat transfer of a round impinging jet issuing from a long straight pipe nozzle was investigated experimentally. The Nusselt numbers for both stagnation point region and wall jet region increased with increasing surface curvature....

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Bibliographic Details
Published in:International journal of heat and mass transfer 1999-07, Vol.42 (13), p.2489-2497
Main Authors: LEE, D. H, CHUNG, Y. S, WON, S. Y
Format: Article
Language:English
Subjects:
Boundary layer flow
Convection and heat transfer
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Heat flux
Heat transfer coefficients
Jets
Nozzles
Nusselt number
Physics
Pressure measurement
Reynolds number
Turbulent flows, convection, and heat transfer
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Summary:The effect of hemispherically concave surface curvature on the local heat transfer of a round impinging jet issuing from a long straight pipe nozzle was investigated experimentally. The Nusselt numbers for both stagnation point region and wall jet region increased with increasing surface curvature. This was attributed to a thinning of the boundary layer caused by the surface curvature and a generation of Taylor-Gortler vortices, which in turn enhanced the heat transfer rate.
ISSN:0017-9310
1879-2189
DOI:10.1016/S0017-9310(98)00318-4