Jet impingement cooling of a convex semi-cylindrical surface

Liquid crystals are used to investigate the effect of high relative curvature on surface heat transfer for a round air jet impinging perpendicularly on a semicylindrical convex surface. The relative curvature, (d/D), is varied by changing the jet tube diameter for the same surface diameter. Relative curvature varies from 0.18-0.38. The effects of relative curvature, Reynolds number and jet exit-to-surface spacing are described. (C) 2001 Editions scientifiques et medicales Elsevier SAS.