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 journalArticlepeer-review

1 Scopus citations

Abstract

Measured heat transfer rates through turbulent and transitional boundary layers on an isothermal, convexly curved wall of 45 cm radius show Stanton numbers 20-50 percent below flat wall values for the same enthalpy thickness Reynolds number. Heat transfer rates recovered slowly on a flat wall downstream of the curved wall. After 60 cm, Stanton numbers were still 15-20 percent below flat wall values. Five secondary effects were studied to determine their relative importance and to guide modeling: (1) initial boundary layer thickness, (2) freestream velocity, (3) freestream acceleration, (4) unheated starting length, and (5) maturity of the boundary layer.

Original languageEnglish (US)
JournalAmerican Society of Mechanical Engineers (Paper)
Issue number81 -HT-78
StatePublished - Jan 1 1981

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