Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss.106...73r&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 106, no. 1, Nov. 1984, p. 73-80.
Astronomy and Astrophysics
Astrophysics
1
Convective Heat Transfer, Energy Dissipation, Heat Flux, Rotating Spheres, Viscous Flow, Wall Temperature, Boundary Layer Flow, Heat Transfer Coefficients, Nusselt Number, Skin Friction
Scientific paper
The effect of viscous dissipation on mixed-convection flow about a rotating sphere with a prescribed uniform surface heat flux (UHF) has been investigated analytically. Merk's (1959) type of series expansions is used to obtain the heat-transfer rate and the skin-friction coefficients. The results are presented for Pr = 1; rotation parameter = 0 and 1; buoyancy parameter = 0, 0.5, and 1 and various values of the dissipation parameter at various angular positions. As in the case of uniform wall temperature (UWT), the heat-transfer rate decreases with viscous dissipation. It is also observed that for an equivalent viscous dissipation effect, heating by UHF yields larger Nusselt number than heating by UWT.
Palekar M. G.
Rajasekaran R.
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