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RESEARCH PAPERS

Laminar Boundary Layer Transfer over Rotating Bodies in Forced Flow

[+] Author and Article Information
Min-Hsiun Lee

Auburn University, Auburn, Ala.

D. R. Jeng, K. J. De Witt

The University of Toledo, Toledo, Ohio

J. Heat Transfer 100(3), 496-502 (Aug 01, 1978) (7 pages) doi:10.1115/1.3450837 History: Received June 07, 1977; Online August 11, 2010

Abstract

A procedure is described for the calculation of momentum and heat transfer rates through laminar boundary layers over rotating axisymmetric bodies in forced flow. By applying appropriate coordinate transformations and Merk’s type of series, the governing momentum equations can be expressed as a set of coupled ordinary differential equations that depend on a wedge parameter and on a rotation parameter. For the energy equation, a set of ordinary differential equations is obtained which depend explicitly on the Prandtl number and implicitly on the aforementioned parameters. These equations are numerically integrated for a range of parameter values for the special case of a rotating sphere, and the local friction coefficient and the local Nusselt number are presented for values of the rotation parameter B = 1, 4, and 10 with Prandtl numbers of 1, 10, and 100. These results are then compared with previous theoretical results. It is also shown how the flow and heat transfer characteristics for a rotating disk can be readily obtained as a special case from the formulation for the rotating sphere. The disk results are also compared with previous theoretical and experimental studies.

Copyright © 1978 by ASME
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