Abstract
The unsteady natural convection boundary layer flow over a semi-infinite vertical cylinder is considered with combined buoyancy force effects, for the situation in which the surface temperature T ′ w(x) and C ′ w(x) are subjected to the power-law surface heat and mass flux as K(T ′/r) = −ax n and D(C ′/r) = −bx m. The governing equations are solved by an implicit finite difference scheme of Crank-Nicolson method. Numerical results are obtained for different values of Prandtl number, Schmidt number ‘n’ and ‘m’. The velocity, temperature and concentration profiles, local and average skin-friction, Nusselt and Sherwood numbers are shown graphically. The local Nusselt and Sherwood number of the present study are compared with the available result and a good agreement is found to exist.
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Received on 7 July 1998
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Ganesan, P., Rani, H. Unsteady free convection on a vertical cylinder with variable heat and mass flux. Heat and Mass Transfer 35, 259–265 (1999). https://doi.org/10.1007/s002310050322
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DOI: https://doi.org/10.1007/s002310050322