Conjugate mixed convection in a rectangular cavity with a local heater

Mixed convection in an open cavity having solid walls of finite thickness and conductivity under the effect of local heaters has been studied. The domain of interest is considered as an electronic cabinet having heat-generating chips with active cooling system. Mathematical description of analyzed physical process has been carried out on the basis of two-dimensional partial differential equations with corresponding initial and boundary conditions that have been formulated in dimensionless stream function, vorticity and temperature. Boundary-value problem has been solved by finite difference method. A numerical analysis has been carried out for Pr = 0.7, Re=100 and a wide range of Richardson number (RI=0.01-10.0), heater location (left and right walls with bottom, central or upper position) and heater size (h(2)/L = 0.3-0.6) in order to understand the effectiveness of modeled active cooling system. (C) 2018 Elsevier Ltd. All rights reserved.