【作者】 赵延文； 聂在平； 马弘舸；

【Author】 Zhao Yanwen,Nie Zaiping and Ma Hongge (Dept.of Microwave Engineering,University of Electronic Science and Technology of China,Chengdu 610054)

【机构】 电子科技大学微波工程系；

【摘要】 本文给出了UPML媒质中二维问题的变方向隐式时域有限差分方法(ADIFDTD),通过计算实例表明,ADI-FDTD方法在UMPL媒质中仍然是无条件稳定的,其时间步长不受CFL稳定性条件的限制;并且当计算区域内具有精细差分网格时,其计算效率明显优于传统的时域有限差分方法(FDTD)。更多还原

【Abstract】 In this paper,we present the alternating-direction implicit finite-difference time-domain(ADI-FDTD) method in perfectly matched uniaxial medium(UPML) for the 2- D TM wave.The numerical examples are given to demonstrate that the ADI-FDTD method in UPML medium remains unconditionally stable,and the limitation of the time-step size is not dependent on CFL condition.If the size of the cell in computational domain is smaller,the ADI-FDTD method is more efficient than the conventional FDTD method.更多还原