Résumé:
The purpose of the present paper is to analyze numerically the flow and heat
transfer by steady laminar natural convection in an elliptical horizontal annulus filled with a
Newtonian incompressible fluid saturated porous medium, with an isothermal inner and
outer boundary. This study is carried out using the Darcy flow model, Boussinesq’s
approximation and the vorticity-stream function formulation, the continuity and the
momentum equations are expressed. A computer code was developed, using finite volume
method. The stream lines and temperature distributions are presented and analyzed,
examining the slope effect
