Numerical simulation of electro-magnetic and flow fields of TiAl melt under electric field  

作　　者：Zhang Yong Ding Hongsheng Jiang Sanyong Chen Ruirun Guo Jingjie 

机构地区：[1]National Key Laboratory for Precision Heat Processing of Metals, Harbin 150001, China [2]School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China

出　　处：《China Foundry》2010年第3期241-247,共7页中国铸造（英文版）

基　　金：supported by the Program for New Century Excellent Talents in Universities of the Ministry of Education of China under Grant No.NCET-08-0164;the Foundation of National Key Laboratory for Precision Heat Processing of Metals

摘　　要：This article aims at building an electromagnetic and fluid model, based on the Maxwell equations and Navier-Stokes equations, in TiAl melt under two electric fields.FEM (Finite Element Method) and APDL (ANSYS Parametric Design Language) were employed to perform the simulation, model setup, loading and problem solving.The melt in molds of same cross section area with different flakiness ratio (i.e.width/depth) under the load of sinusoidal current or pulse current was analyzed to obtain the distribution of electromagnetic field and flow field.The results show that the induced magnetic field occupies sufficiently the domain of the melt in the mold with a flakiness ratio of 5:1.The melt is driven bipolarly from the center in each electric field.It is also found that the pulse electric field actuates the TiAl melt to flow stronger than what the sinusoidal electric field does.This article aims at building an electromagnetic and fluid model, based on the Maxwell equations and Navier-Stokes equations, in TiAl melt under two electric fields.FEM （Finite Element Method） and APDL （ANSYS Parametric Design Language） were employed to perform the simulation, model setup, loading and problem solving.The melt in molds of same cross section area with different flakiness ratio （i.e.width/depth） under the load of sinusoidal current or pulse current was analyzed to obtain the distribution of electromagnetic field and flow field.The results show that the induced magnetic field occupies sufficiently the domain of the melt in the mold with a flakiness ratio of 5：1.The melt is driven bipolarly from the center in each electric field.It is also found that the pulse electric field actuates the TiAl melt to flow stronger than what the sinusoidal electric field does.

关 键 词：numerical simulation TiAI melt electromagnetic field flow field 

分 类 号：TG146.23[一般工业技术—材料科学与工程]