Abstract
This chapter discusses the free convection boundary-layer flow over vertical surfaces in porous media using a thermal non-equilibrium model. Convective flows due to the combined buoyancy effects of thermal and species (concentration) diffusion in a fluid-saturated porous medium have many applications, such as soil pollution, fibrous insulation, and nuclear waste disposal. Free convection over heated catalytic surfaces, which are surrounded by a fluid-saturated porous medium, is of importance in the design of equipment used in several types of engineering systems. Under this, the areas of research include tubular laboratory reactors, chemical vapor deposition systems, the oxidation of solid materials in large containers, synthesis of ceramic materials by a self-propagating reaction, combustion in underground reservoirs for enhanced oil recovery, and the reduction of hazardous combustion products using catalytic porous beds.
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