Heat and Mass Transfer from Small Spheres and Cylinders Freely Suspended in Shear Flow
作者:
Neil A. Frankel,
Andreas Acrivos,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1968)
卷期:
Volume 11,
issue 9
页码: 1913-1918
ISSN:0031-9171
年代: 1968
DOI:10.1063/1.1692218
出版商: AIP
数据来源: AIP
摘要:
The problem of heat and mass transfer from small spheres and cylinders freely suspended in a shear flow is considered in the limit of Reynolds number Re → 0. Asymptotic formulas are derived which relate the Nusselt number Nu to the Pe´clet number Pe in the limit Pe → 0, and for the case of the cylinder, Pe → ∞. At high Pe, the Nusselt number is found to approach a constant value, whereas, at low Pe it is shown to increase withPe12for the sphere and with—(log Pe)−1for the cylinder. These results indicate the existence of a fundamental difference at high Pe between the shear flow problem studied here and the corresponding classical problem of uniform flow at infinity.
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