物理学报
物理學報
물이학보
2013年
3期
114-119
,共6页
刘亚文*%陈亦望%徐鑫%刘宗信
劉亞文*%陳亦望%徐鑫%劉宗信
류아문*%진역망%서흠%류종신
完全匹配层%辅助微分方程%时域多分辨率分析%Daubechies尺度函数
完全匹配層%輔助微分方程%時域多分辨率分析%Daubechies呎度函數
완전필배층%보조미분방정%시역다분변솔분석%Daubechies척도함수
perfectly matched layer%auxiliary differential equation%multiresolution time-domain%Daubechies scal-ing function
将基于辅助微分方程的完全匹配层(ADE-PML)吸收边界条件引入到基于Daubechies尺度函数的时域多分辨率分析算法中.与目前广泛应用的Berenger完全匹配层(PML)和各向异性介质完全匹配层(APML)相比,该吸收边界条件的实现更加容易且更节省内存.数值结果表明, ADE-PML在吸收传播模和低频凋落模方面均优于PML和APML.
將基于輔助微分方程的完全匹配層(ADE-PML)吸收邊界條件引入到基于Daubechies呎度函數的時域多分辨率分析算法中.與目前廣汎應用的Berenger完全匹配層(PML)和各嚮異性介質完全匹配層(APML)相比,該吸收邊界條件的實現更加容易且更節省內存.數值結果錶明, ADE-PML在吸收傳播模和低頻凋落模方麵均優于PML和APML.
장기우보조미분방정적완전필배층(ADE-PML)흡수변계조건인입도기우Daubechies척도함수적시역다분변솔분석산법중.여목전엄범응용적Berenger완전필배층(PML)화각향이성개질완전필배층(APML)상비,해흡수변계조건적실현경가용역차경절성내존.수치결과표명, ADE-PML재흡수전파모화저빈조락모방면균우우PML화APML.
A new implementation of perfectly matched layer (PML) with auxiliary differential equation (ADE-PML) is presented for the multiresolution time-domain method. The implementation is easier to obtain and can save more memories than the popularly used PML proposed by Berenger and the anisotropic perfectly matched layer (APML) when a more generalized medium is treated. Numerical results demonstrate that the ADE-PML is more superior to the PML and APML in absorbing propagation modes and low-frequency evanescent modes.
