摘要
针对某厂50 t铝熔炼炉与电磁搅拌器,采用ANSYS软件建立三维有限元模型,对熔炼炉内电磁搅拌磁场进行数值模拟。研究结果表明:电磁搅拌器在其周围空间产生交变磁场,其变化周期等于加载的低频交流电周期;磁场向右呈波浪式移动,当加载电流频率为0.4 Hz时,行波移动速度为1.44 m/s;磁感应强度在铝液水平层内由边缘向中部逐渐增大,并沿铝液高度方向迅速衰减;铝液底层的电磁搅拌器垂直投影区域磁感应强度较大,为搅拌作用的核心区域;磁感应强度的仿真结果与实测结果基本吻合。
Based on ANSYS software,three dimensional finite element model for a 50 t aluminum melting furnace and the electromagnetic stirrer was built,and numerical simulation of magnetic field in the furnace with electromagnetic stirring was conducted.The results show that the electromagnetic stirrer produces alternating magnetic field in the surrounding,which changes with the period of the low frequency AC current loaded on the model.The magnetic field travels right like waves with the speed 1.44 m/s when the current frequency is 0.4 Hz.The magnetic induction intensity increases from the edge to the center in the horizontal plane of the furnace and decays quickly along with the height of molten aluminum.The vertical-projected area of electromagnetic stirrer is the core area where magnetic flux density is large.The calculated magnetic induction intensity agrees well with the test data.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2011年第10期3195-3200,共6页
Journal of Central South University:Science and Technology
基金
国家高技术研究发展计划("863"计划)项目(2006AA03Z523)
关键词
铝熔炼炉
电磁搅拌
磁场
数值模拟
aluminum melting furnace
electromagnetic stirring
magnetic field
numerical simulation
