HEAT TRANSFER AND FILM COOLING FOLLOWING INJECTION THROUGH INCLINED CIRCULAR TUBES.

V. L. Eriksen, R. J. Goldstein

Research output: Contribution to journalArticlepeer-review

185 Scopus citations

Abstract

Film cooling effectiveness and heat transfer are measured downstream of injection through discrete holes into a turbulent mainstream boundary layer. Air is injected through both a single hole and a row of holes spaced at three-diameter intervals and inclined at an angle of 35 deg to the main flow. As the mass flux ratio increases past unity, the heat transfer coefficient increases especially with injection through a row of holes. At a blowing rate near two, the lateral average of the heat transfer is as much as 27 percent higher than the heat transfer with no blowing. The increase in heat transfer is attributed to the interaction between the jets and the free stream, causing high levels of turbulence.

Original languageEnglish (US)
Pages (from-to)239-245
Number of pages7
JournalJournal of Heat Transfer
Volume96
Issue number2
DOIs
StatePublished - 1974

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