基于三角形单元的时域有限积分方法研究  

Researches on Finite Integration Time Domain Method Based on Triangular Cells

作　　者：付梅艳[1] 陈再高[1] 王玥[1] 王建国[1] 韩峰[1] 

机构地区：[1]西北核技术研究所,西安710024

出　　处：《微波学报》2010年第S1期83-87,共5页Journal of Microwaves

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.

关 键 词：复杂结构 电磁计算 时域有限积分方法 截止频率 

分 类 号：O441.4[理学—电磁学]