Численное моделирование конвективного теплопереноса жидкости переменной вязкости в замкнутом пористом кубе при наличии изотермического нагревателя

Abstract

Mathematical simulation of natural convection within a cubical porous chamber having an isothermal heater with temperature Th on the bottom surface has been performed. The horizontal walls are adiabatic while the vertical borders have a constant low temperature Tc . The governing equations have been formulated with help of dimensionless variables “vector potential functions - vorticity vector - temperature”. The system of control equations has been solved by the finite difference method. The influence of governing parameters such as Darcy number, Rayleigh number, Prandtl number and variable viscosity parameter on the heat transfer and cooling performance has been studied.