A NUMERICAL STUDY ON NATURAL-CONVECTION OF A HEAT-GENERATING FLUID INRECTANGULAR ENCLOSURES

Unsteady natural convection of a heat-generating fluid in the enclosur es of a rectangular section with isothermal or adiabatic rigid walls i s investigated numerically in the present work. Using the highperforma nce finite-difference scheme in the 2D stream function-vorticity formu lation, developed by the authors, the peculiarities of convective heat transfer are studied in a wide range of thermal and geometric paramet ers for the laminar regime of fluid motion. Steady-state as well as os cillating solutions obtained in this work are compared with available numerical and experimental results of other researchers.