Unsteady Mixed Convection Heat Transfer from a Horizontal Circular Cylinder

[+] Author and Article Information
P. C. Jain, B. L. Lohar

Department of Mathematics, Indian Institute of Technology, Bombay, Powal, Bombay-400 076, India

J. Heat Transfer 101(1), 126-131 (Feb 01, 1979) (6 pages) doi:10.1115/1.3450902 History: Received May 22, 1978; Online August 11, 2010


A numerical investigation of an unsteady mixed convection from a horizontal circular cylinder is presented. The coupled basic equations of motion and energy are solved for two cases 1) Re = 100, Gr = 104 and 2) Re = 200, Gr = 5 × 104 . The velocity field and the temperature field around the cylinder are exhibited by streamlines and isotherms at different times. The Strouhal number for the shedding of vortices in the wake of the cylinder is calculated. Figures have been drawn to show the variations of the local and the mean Nusselt numbers with time. The effects of the presence of free convection are discussed.

Copyright © 1979 by ASME
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