一种改进的吸收边界条件  

An Improvement of Absorbing Boundary Condition

作　　者：彭军[1] 鞠智芹[1] 

机构地区：[1]空军工程大学导弹学院,陕西三原713800

出　　处：《弹箭与制导学报》2004年第S1期204-206,共3页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：在应用时域有限差分法(FDTD)求解电磁散射问题时,需要引入吸收边界条件来截断计算空间。从一般的平面波动方程出发,经过一系列的理论分析,得出了改进的 Mur 吸收边界条件。经过理论分析和数值计算验证了改进的吸收边界条件具有更高的精度,且只增加了非常少量的计算量和内存。When electromagnetic scattering equations are solved using finite-difference time-domain techniques in unbounded space,there must be a absorbing boundary condition limiting the domain in which the field is computed, In this paper,we approximate the wave equation to obtain an improvement of absorbing boundary condition.It is more effective both in theoretical analyses and numerical simulations when compared to second order Mur ABC s.As the same time,there is a little increasing for the CPU time and requireme...

关 键 词：时域有限差分法 吸收边界条件 

分 类 号：TN011[电子电信—物理电子学]