非线性电磁场边界元分析的曲面拟合法

Boundary Element Analysis of Nonlinear Electromagnetic Fields by Surface Fitting

本文提出一种新的求解非线性磁场问题的数值方法,在边界元法中引入曲面拟合法,从而简化内部非线性区域的剖分,用双高次多项式分别对非线性区域的μ,H_x和H_y进行了曲而拟合,计算结果与有限元结果的比较表明,既明显地减少了输入数据,又提高了计算精度。

A new numerical method for solving nonlinear electromagnetic field problems presented in this paper. The combination of boundary dement method with suface fitting method simplifies the discretization of inner nonlinear regions. Binary double k-order polynomials are used for fittingμ, H_x and H_y in nonlinear regions respectively. The comparisons of computational results with finite element results show that this method reduoes the input data greatly and improve the computational aocuracy.