摘要
针对二维复杂结构电磁场计算问题,本文研究了基于三角形单元的时域有限积分方法。将该方法和时域有限差分方法应用于求解半径r=0.085m的理想圆波导对应于TM01模式的截止频率,结果显示时域有限积分方法计算得到的结果与理论值之间的相对误差小于时域有限差分方法计算的结果与理论值之间的相对误差,验证了该方法的优越性。
In order to simulate the electromagnetic fields with complex structure in two dimensional,the Finite Integration Time Domain(FITD)method based on triangular cells was studied.Finite Difference Time Domain(FDTD)method and FITD were applied to compute the cut-off frequency corresponding to the mode of ideal circular waveguide with the radius of 0.085m.The results show that the relative error between results computed by FITD method and the theoretical value is smaller than that between results computed by FDTD method and the theoretical value,which proved the superiority of the FITD method.
出处
《微波学报》
CSCD
北大核心
2010年第S1期83-87,共5页
Journal of Microwaves
关键词
复杂结构
电磁计算
时域有限积分方法
截止频率
electromagnetic computation
complex structure
finite integration time domain
cutoff frequency
