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Effect of thermophysical quantities on the natural convection flow of gases over a vertical cone

Takhar, Harmindar S. and Chamkha, Ali J. and Nath, Girishwar (2004) Effect of thermophysical quantities on the natural convection flow of gases over a vertical cone. ISSN 0020-7225

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Abstract

The laminar steady nonsimilar natural convection flow of a gases over an isothermal vertical cone has been investigated where the thermal conductivity, dynamic viscosity and specific heat at constant pressure are assumed to have a power-law variation with absolute temperature. The density is taken as inversely proportional to the absolute temperature, whereas the Prandtl number is assumed to be constant. The nonlinear coupled parabolic partial differential equations have been solved numerically by using an implicit finite-difference scheme. The variable gas properties significantly affects the heat transfer and skin friction. The heat transfer and skin friction decrease with increasing wall temperature ratio and the streamwise distance. The heat transfer increases with suction, but decreases with injection.

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