冷坩埚玻璃固化熔炉埚底的三维电磁分析  

3D Electromagnetic Analysis for Bottom of Cold Crucible Induction Melter for Vitrification

作　　者：陈楠[1] 刘丽君[1] 郄东生[1] 

机构地区：[1]中国原子能科学研究院放射化学研究所,北京102413

出　　处：《原子能科学技术》2016年第5期955-960,共6页Atomic Energy Science and Technology

摘　　要：利用ANSYS有限元分析软件建模并分析了冷坩埚玻璃固化熔炉埚底结构以及埚底与感应线圈之间的距离对冷坩埚内电磁场分布的影响。计算结果表明,磁通密度、电流密度和焦耳热密度在玻璃熔体的表面中部区域最大,在中心和底部区域最低。对埚底进行分瓣有利于降低埚底的屏蔽效应,分为3瓣时,玻璃的发热量提高了12.7%。埚底与感应线圈距离在10~15cm时,冷坩埚对玻璃物料的加热效率较高。3D model of cold crucible induction melter（CCIM）for vitrification was built by finite element analysis software ANSYS.The effects of CCIM bottom structure and distance between crucible bottom and induction coil on the distribution of electromagnetic field in CCIM were studied.The results show that the magnetic flux density,current density and Joule heat density reach maximum value at the middle region of the glass melt surface and reach minimum value at the center and crucible bottom of the glass melt.The crucible bottom has significant shielding effect on the electromagnetic field.Sectioning the crucible bottom can improve the electromagnetic field penetrability.The Joule heat generated in the glass increases by 12.7% when the crucible bottom is sectioned into 3parts.The CCIM has a relative high heating efficiency when the distance between the crucible bottom and the induction coil is 10-15 cm.

关 键 词：玻璃固化 冷坩埚 有限元方法 电磁场 

分 类 号：TL941.33[核科学技术—辐射防护及环境保护]