Impingement cooling from a circular jet in a cross flow

J. P. Bouchez, Richard J Goldstein

Research output: Contribution to journalArticlepeer-review

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Local impingement cooling effectiveness and heat-transfer coefficients are measured over the interaction area of an air jet impinging on a wall and subjected to a cross flow of air. Impingement cooling effectiveness decreases with the blowing rate and at low blowing rates, there is, near the stagnation point, a definite influence of the density ratio. Effectiveness values as high as 60 per cent are obtained at the stagnation point with blowing rate of 12 and nozzle to plate distance of six diameters. The heat-transfer coefficient can be as high as 700W/(m2 K) for a blowing rate of twelve with the jet only six diameters above the surface on which it impinges.

Original languageEnglish (US)
Pages (from-to)719-730
Number of pages12
JournalInternational Journal of Heat and Mass Transfer
Issue number6
StatePublished - Jun 1975


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