International Conference on Mechanical Engineering and Technology (ICMET-London 2011)
42 VOCs Natural Convection in Partially Porous Cavity
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The flow, heat, VOCs and humidity transfer in a cavity partially filled with thin porous medium were concerned in this paper. Two-domain model was founded by considering stress jump conditions at the interface, Brinkman-Forchheimer extended Darcy equation for flow in the porous medium and Navier-Stokes equation for flow in the clear fluid region. Finite element method was used to solve the governing equations with weak constraint condition at the interface. This paper was focused on the influence of Darcy number and stress jump conditions on flow, heat, VOCs and humidity transfer in the composite cavity. The numerical results showed that heat and humidity transfer would be enhanced with increase of Darcy number and stress jump coefficient. And the stress jump coefficient with different Darcy number would induce a specific behavior of VOCs transfer in the enclosure.