Semnan University PressJournal of Heat and Mass Transfer Research2345-508XArticles in Press20190201Numerical Study of turbulent free convection of liquid metal with constant and variable properties in the presence of magnetic field362410.22075/jhmtr.2019.15043.1209ENMohsen PirmohammadiIslamic Azad University, Pardis BranchJournal Article20180629In the present study, turbulent MHD convection of liquid metal with constant and variable properties is investigated numerically. The finite volume method is used to simulate the fluid flow and natural convection heat transfer in a square cavity. The fluid flow and heat transfer were calculated and compared for two cases constant and variable properties. It is observed that for the case variable properties in high Hartmann numbers (Ha) the temperature gradient near the hot wall is more than the cold wall. For both cases the temperature gradient near the hot and cold walls and also the slope of temperature profile is high. By applying magnetic field and increasing the Ha the temperature slope reduces so at Ha=800 the profile is linear. In the case constant properties the slope of temperature profile near the vertical walls is the same and the temperature profiles pass from one point at the center of the cavity. But in the case variable properties as it was expected the temperature profile doesnâ€™t pass one point and the slope of lines at high Hartmann numbers near the hot and cold walls are partly different. Also it is observed that for the case constant properties the Nusselt number is less than the case variable properties.http://jhmtr.journals.semnan.ac.ir/article_3624_738c14263352fecc7b0d513e1135423c.pdf