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.
