Universal Magnetic Field Toolkit - 二维磁场计算工具

Universal BField Toolkit包括三个程序，涵盖了磁场模拟。

PerMag计算具有平面或圆柱对称性的任意几何形状的静磁场。该程序可以使用永磁体、线圈和铁磁材料进行组合运行。凭借其开放的数据结构，PerMag可以处理全部永磁材料，包括像Alnico这样的非线性材料。分析功能包括自动确定磁场能量、力和感应电流以进行电感计算。

Pulse决定了存在涡流时磁场的时间变化。可以使用数字函数或表格函数输入的系统为多个线圈分配任意电流波形。该程序还使用用户定义的磁导率表处理非线性磁性材料。Pulse在指定时间生成多个数据文件，并在给定位置生成磁场和感应电场的历史文件。其他功能包括存储能量、峰值场值、磁力和扭矩的自动计算。Pulse可应用于变压器、磁记录设备、高场脉冲磁体、线性感应加速器、高频电感器和微电子设备中的磁耦合。

Nelson计算导电介质中的交流或射频磁场。应用包括模拟材料加工的感应加热以及变压器或音频设备的频率响应。谐波电流的幅度和相位可以单独设置。材料的特点是磁导率和电导率值。程序自动计算并记录按区域组织的功率密度和总电流。该信息可以移植到TDiff程序中进行热计算。

解决方案程序在可变分辨率共形三角形网格上采用有限元方法，其大小只受计算机安装内存的限制。解决方案可能包含多达250个具有指定材料属性的区域。独立包包括网格，用于为全部解决方案程序自动创建等角三角形网格。

【英文介绍】

The Universal BField Toolkit includes three programs that cover the full range of magnetic field simulations.

PerMag calculates static magnetic fields for any geometry with planar or cylindrical symmetry. The program can perform combined runs with permanent magnets, coils and ferromagnetic materials. With its open data structure, PerMag handles all permanent magnet materials, including non-linear materials like Alnico. A concise users' manual reviews magnetostatic theory with anisotropic materials and numerical methods for field solutions. Analysis capabilities include automatic determination of field energy, forces and induced current for inductance calculations.

Pulse determines time variations of magnetic fields in the presence of eddy currents. Multiple coils may be assigned arbitrary current waveforms using either mathematical functions or a fiexible system of tabular function input. The program also handles non-linear magnetic materials with user-defined magnetic permeability tables. Pulse produces multiple data files at specified times and history files of magnetic and induced electric field at given locations. Other features include automatic calculation of stored energy, peak field values, magnetic forces and torques. Pulse has applications to transformers, magnetic recording devices, high-field pulsed magnets, linear induction accelerators, high-frequency inductors and magnetic coupling in microelectronic devices.

Nelson calculates AC or RF magnetic fields in conductive media. Applications include simulation of induction heating for material processing and the frequency response of transformers or audio devices. The amplitude and phase of harmonic currents may be set individually. Materials are characterized by values of magnetic permeability and electrical conductivity.The program automatically calculates and records power density and total current organized by region. The information may be ported to the TDiff program for thermal calculations.

The solution programs employ finite-element methods on variable-resolution conformal triangular meshes with size limited only by the installed memory of the computer. Solutions may contain up to 250 regions with specified material properties. The self-contained package includes Mesh for the automatic creation of conformal triangular meshes for all solution programs.