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International Heat Transfer Conference 6

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

CONVECTIVE HEATING OF CONCAVE BODIES IN HIGH SPEED RAREFIED GASES

C. R. Wimberly
The University of Mississippi

DOI: 10.1615/IHTC6.1080
pages 209-214

Abstract

A method is presented for representing the convective heat transfer to general concave surfaces in high speed rarefied gases for molecular speed ratios from 2 to ∞. A procedure is also presented that allows predictions of heat transfer coefficients from free molecule flow through the transition regime to continuum flow. In the analysis, the molecules are assumed to obey Maxwell's velocity distribution law before and after collisions, reflecting directionally in a cosine distribution. The colliding molecules are assumed to be perfectly accommodated to the surface conditions, where the surface temperature is uniform. The resulting general equations are then presented and applied to some simple concave bodies.

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