1.引言耦合方法已经用于求解二维直角坐标下的电磁场问题。用这种方法可将任何区域作为有限元区或边界元区。这是极其有用的,因为:1)使用边界元法可以减少方程数量;2)容易处理开域问题;3)非线性区域可用有限元法求解。这种方法要求解的方程组比较复杂,这在一定程度上抵消了它的优点,但它最终可以减少计算时间和内存,而且是处理开域问题的惯用方法。 1. Introduction Coupling methods have been used to solve electromagnetic field problems in two-dimensional Cartesian coordinates. In this way, any area can be used as a finite element area or a boundary element area. This is extremely useful because: 1) the use of the BEM can reduce the number of equations; 2) it is easy to deal with open-domain problems; and 3) nonlinear areas can be solved by finite element methods. This method solves the complex equations, which to some extent offset its advantages, but it can eventually reduce the calculation time and memory, and is the usual method to deal with open-domain problems.