Convective flow along a horizontal circular cylinder and a vertical wavy surface with temperature dependent viscosity and thermal conductivity

Abstract

In this dissertation, a steady two-dimensional natural convection flow along a horizontal circular cylinder and a vertical wavy surface with tcmpcmllirc dependent viscosity JJ(7) and thermal conductivIty k(Tj has been investigated. Using the appropriate transformations the basic equations are transformed to non-similar boundary-layer equations, which are solved numerically using a vcry efficient implicit finite-difference method together with Keller box scheme. Here we have focused our attention on the evolution of the surface shear stress in terms oflocal skin-friction, mle of heat transfer in terms of local Nusselt number, streamlines, isotherms, velocity distribution as well as viscosity distribution for a selection of parameter sets consisting of the viscosity-variation parameter 6, thermal conductivity- vanation parameter 1, Prandll number Pr and amplitude of the wavy surface.