液态金属镓自然对流换热数值模拟

为更好地得到液态金属的流动和传热特性,模拟了液态金属流体镓(Ga)自然对流流动和传热过程.采用单流体模型研究液态金属流体Ga的流动特性和传热机理,考虑边界条件对自然对流的影响,选用合适的边界条件进行了模拟.结果表明,该工况下的传热以导热为主,速度矢量是顺时针旋转分布,并与实验数据较好吻合.Gr数对液态金属Ga自然对流影...

Numerical investigation on the natural convection of liquid gallium

To better understand the heat-transfer character and flow of liquid gallium,a natural convection flow of liquid gallium was numerically simulated by using single phase method on the heat transfer of liquid gallium in a two dimensional enclosure. The effects of boundary condition and Grashof number on the flow and the convective heat transfer behavior are investigated. The numerical results which include temperature and velocity graph are compared with the experimental data and reasonable agreement is achieved. In a case that thermal conductivity takes a leading part,when Grashof number goes up,convection will gradually play a more important role.