Turbulent natural convection and conduction in enclosures bounded by a massive wall is numerically studied. Two-dimensional equations of conservation of mass, momentum and energy, with the Boussinesq approximation and using the kappa-epsilon model for turbulence, are solved using a finite difference method. Grids are generated in a nonuniform manner so that steep gradients near the wall regions are accounted for as required. Various parameters were : Rayleigh number (from 10(8) to 10(12)), dimensionless conductivity of bounding wall (from 1 to 10), dimensionless wall width (from 0 to 0.5), enclosure aspect ratio (from 0.5 to I) and the inclination angle (from 0 to 180 degrees). The results are reduced in terms of the normalized Nusselt number as a function of the Rayleigh number, and other dimensionless parameters. The isotherms and streamlines an produced for various Rayleigh numbers and geometrical conditions.