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A numerical study of combined forced and natural convection heat transfer in a vertical cylinder bundle

✍ Scribed by Ken Inoue; Naozo Hattori

Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
731 KB
Volume
32
Category
Article
ISSN
1099-2871

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✦ Synopsis

Abstract

Combined forced and natural convection in a bundle of vertical cylinders have been studied numerically with the aid of Riemann geometry. The cylinders heated uniformly are arranged in an equilateral triangular pattern of three bundle spacings S/D = 1.1, 1.5, and 1.9. Numerical calculations are made of the mixed convection of air (Pr = 0.7) in a subchannel of the bundle at ratios of modified Grashof number to Reynolds number Gr*/Re from 1 to 10^5^. The results show that the reverse flows appear along the center line in the subchannel with increasing Gr*/Re. Local Nusselt numbers for the thermally fully‐developed region are well correlated with Gr*/Re. Β© 2003 Wiley Periodicals, Inc. Heat Trans Asian Res, 32(7): 639–649, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/htj.10118

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