摘要
Numerically investigation was carried out for turbulent magnetohydrodynamics natural convection in a square enclosure.The vertical walls are maintained isothermal at different temperatures and the horizontal walls are adiabatic. Non linear goveming equations for the fluid flow and heat transfer are solved by finite volume method.The computations are carded out for Rayleigh number 107,Hartmann numbers from 0 to 800 and Prandtl number 0.01(sodium).It is observed that as the Hartmarm number increases the stratification of the temperature field in the interior reduces,and the thermal boundary layers at the two side walls begin to diminish and the isotherms become almost parallel to the vertical walls which indicates that natural convection heat transfer has been changed to conduction mode.
Numerically investigation was carried out for turbulent magnetohydrodynamics natural convection in a square enclosure.The vertical walls are maintained isothermal at different temperatures and the horizontal walls are adiabatic. Non linear goveming equations for the fluid flow and heat transfer are solved by finite volume method.The computations are carded out for Rayleigh number 107,Hartmann numbers from 0 to 800 and Prandtl number 0.01(sodium).It is observed that as the Hartmarm number increases the stratification of the temperature field in the interior reduces,and the thermal boundary layers at the two side walls begin to diminish and the isotherms become almost parallel to the vertical walls which indicates that natural convection heat transfer has been changed to conduction mode.
