液态金属镓自然对流换热数值模拟  

Numerical investigation on the natural convection of liquid gallium

作　　者：门玉宾[1,2] 马军军[1] 王书福[1] 彭稳根[1] 刘元春[1] 何玉荣[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,哈尔滨150001 [2]中国航空工业集团公司沈阳发动机设计研究所,沈阳110015

出　　处：《哈尔滨工业大学学报》2011年第1期114-118,共5页Journal of Harbin Institute of Technology

基　　金：教育部新世纪优秀人才支持计划(NCET-08-0159);人事部留学人员科技活动项目择优资助;中国博士后科学基金;哈尔滨市科技创新人才研究专项基金(No.2008RFLG005)

摘　　要：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自然对流影响的数值模拟表明,随着Gr的增加,液态金属的换热逐渐以对流换热为主.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 ihe 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.

关 键 词：液态金属流体镓 自然对流 数值模拟 Gr数 

分 类 号：TK222[动力工程及工程热物理—动力机械及工程]