Turbulent boundary layer heat transfer experiments: A separate effects study on a convexly curved wall

T. W. Simon, R. J. Moffat

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

Measured heat transfer rates through turbulent and transitional boundary layers on an isothermal, convexly curved wall show Stanton numbers 20-50 percent below flat wall values. Recovery is slow on aflat wall downstream of the curve; after 60 cm, Stanton numbers were 15-20 percent below flat wall values. Five secondary effects were studied: (i) initial boundary layer thickness, (ii) free-stream velocity, (iii) free-stream acceleration, (iv) unhealed starting length, and (v) transition. Regardless of the initial state, curvature without acceleration eventually forced the boundary layer into an asymptotic condition: (formula presented). Strong acceleration with curvature brought the exponent on (formula presented).

Original languageEnglish (US)
Pages (from-to)835-840
Number of pages6
JournalJournal of Heat Transfer
Volume105
Issue number4
DOIs
StatePublished - Nov 1983

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