Journal
EXPERIMENTAL THERMAL AND FLUID SCIENCE
Volume 28, Issue 8, Pages 893-901Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.expthermflusci.2004.01.006
Keywords
jets; jet impingement; impingement heat transfer
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The influence of a protruding pedestal oil impinging jet heat transfer is investigated. A discretely heated portion of a protruding pedestal is exposed to a single circular impinging air jet with Re = 10,000-30,000. Jet exit diameters of 3.5, 9.5 and 21 mm are positioned at jet exit-to-surface distances of 2-5 diameters. The nondimensional heat transfer over the discretely heated portion of the pedestal is compared to a flat plate design to gauge the effects of Reynolds number, jet diameter and jet exit-surface spacing. In all cases, the presence of the protruding pedestal downstream is found to increase heat transfer. (C) 2004 Elsevier Inc. All rights reserved.
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