基于ANSYS有限元电磁仿真的菱形磁介质感应磁场分布特性研究
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摘要
采用ANSYS数值模拟软件对不同特征参数的菱形介质表面感应磁场分布特性进行了研究。单根菱形介质的感应磁场数值模拟结果表明:磁介质迎磁面方向为磁性颗粒吸附区,垂直于磁场方向为磁性颗粒排斥区;随着磁介质长轴尺寸的增加,感应磁场分布范围增大,介质表面磁感应强度降低,磁介质有效吸附面积减小,当长轴尺寸为2.6 mm时,介质表面磁场梯度和磁场力较高。多根菱形介质复合体系的感应磁场数值模拟结果表明:随着介质长轴尺寸的增加,磁介质间感应磁场的交互作用增强,介质长轴尺寸越大,磁介质表面的磁感应强度、磁场梯度及磁场力越小;随着介质间隙的减小,磁介质间的交互作用增强,磁介质表面的磁感应强度增大,但感应磁场的磁场梯度和磁场力均降低;磁介质间的交互作用对磁性颗粒排斥区和吸附区大小没有明显影响。
The ANSYS numerical simulation software was used to study the distribution characteristics of the induced magnetic field of rhombic matrix with different characteristic parameters. The numerical simulation results of the induced mag?netic field of a single rhombic matrix indicated that the magnetic flux is the magnetic particle adsorption zone,and the magnet?ic particle exclusion zone is perpendicular to the magnetic field. As the long axis dimension of the magnetic medium increas?es,the range of the induced magnetic field increases,the magnetic induction intensity decreases,and the effective adsorp?tion area of the magnetic medium decreases.When the long axis dimension is 2.6 mm,the magnetic field gradient and magnet?ic field force of the medium surface are higher. Numerical simulation results of induced magnetic fields in multiple rhombic matrix composite systems indicated that as the long axis dimension of the medium increases,the interaction of the induced magnetic field between the magnetic media increases,and the larger the long axis dimension of the medium,the smaller the magnetic induction,magnetic field gradient and magnetic force of the magnetic medium surface. As the dielectric gap decreas?es,the interaction between the magnetic media increases,and the magnetic induction intensity of the magnetic medium sur?face increases,but the magnetic field gradient and magnetic field force of the induced magnetic field decrease. The interac?tion between the magnetic media has no significant effect on the size of the magnetic particle exclusion zone and the adsorp?tion zone.
The ANSYS numerical simulation software was used to study the distribution characteristics of the induced magnetic field of rhombic matrix with different characteristic parameters. The numerical simulation results of the induced mag?netic field of a single rhombic matrix indicated that the magnetic flux is the magnetic particle adsorption zone,and the magnet?ic particle exclusion zone is perpendicular to the magnetic field. As the long axis dimension of the magnetic medium increas?es,the range of the induced magnetic field increases,the magnetic induction intensity decreases,and the effective adsorp?tion area of the magnetic medium decreases.When the long axis dimension is 2.6 mm,the magnetic field gradient and magnet?ic field force of the medium surface are higher. Numerical simulation results of induced magnetic fields in multiple rhombic matrix composite systems indicated that as the long axis dimension of the medium increases,the interaction of the induced magnetic field between the magnetic media increases,and the larger the long axis dimension of the medium,the smaller the magnetic induction,magnetic field gradient and magnetic force of the magnetic medium surface. As the dielectric gap decreas?es,the interaction between the magnetic media increases,and the magnetic induction intensity of the magnetic medium sur?face increases,but the magnetic field gradient and magnetic field force of the induced magnetic field decrease. The interac?tion between the magnetic media has no significant effect on the size of the magnetic particle exclusion zone and the adsorp?tion zone.
引文
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