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中国原子能科学研究院开发的三维静电、静磁场计算软件包DE3D,其电磁理论基于目前国际上先进的双标量位方法,不仅减少对内存的要求,可以在PC机上运行,而且从根本上提高了计算精度。数值方法以三维等参元有限元法为基础,可适用于各种复杂边界的非线性介质所形成的静电场、静磁场计算。精度为百分之一左右,与目前国际上先进的软件包水平相同。由于在处理电流积分等方面的特殊技术,在某些情况下精度明显好于国外同类软件。文中引入一回旋加速器主磁铁及其束流传输线上磁元件设计作为典型实例,证明了该软件能帮助设计者改善其产品设计,该软件已给生产和设计者带来效益。
The 3D static and static magnetic field calculation software package DE3D developed by China Institute of Atomic Energy, based on the current international advanced double-scalar method, not only reduces the memory requirements, but also runs on a PC and improves fundamentally calculation accuracy. Based on the three-dimensional isoparametric finite element method, the numerical method can be applied to the calculation of electrostatic field and static magnetic field formed by nonlinear media with various complicated boundaries. Accuracy of about one percent, with the current international advanced level of the same package. Because of the special technology in dealing with the current integral and so on, the accuracy is obviously better than similar foreign software in some cases. The paper introduces the design of the magnetic element of a cyclotron main magnet and its beam transmission line as a typical example, which proves that the software can help designers to improve their product design. The software has brought benefits to the production and designers.