电磁离心凝固过程熔体流动和传热的有限元数值模拟  

Finite Element Simulation of the Melt Flow and Heat Transfer in Electromagnetic Centrifugal Casting

作　　者：贺幼良[1] 杨院生[1] 胡壮麒[1] 

机构地区：[1]中国科学院金属研究所,辽宁沈阳110015

出　　处：《铸造》2000年第8期473-477,共5页Foundry

基　　金：国家自然科学基金!资助项目 ( 5999544 0 -4 )

摘　　要：利用电磁流体动力学有关理论 ,建立了电磁离心凝固过程熔体流动与热量传输的耦合分析模型 ,采用有限元法对电磁离心凝固过程进行了分析 ,得出了瞬态速度场和温度场。分析结果表明 ,电磁离心凝固过程中 ,正是由于电磁力引起的受迫对流运动 ,对金属熔体起电磁搅拌作用并使晶粒得到细化 ,从而提高铸件质量。An analysis model coupling the melt flow and heat transfer in electromagnetic centrifugal casting is proposed on the basis of electromagnetic dynamics.Finite element method(FEM)is used to simulate the solidification process of the melt in electromagnetic centrifugal casting and the instantaneous velocity and temperature fields are obtained.The calculated results indicate that because of the forced convection produced by electromagnetic force,the metal melt is stirred electromagnetically and the grain is refined,which in turn improves the quality of electromagnetic centrifugal castings.

关 键 词：数值模拟 电磁离心铸造 凝固过程 传热 有限元法 

分 类 号：TG249.4[金属学及工艺—铸造] TG249.6