基于卷积的Perfect-Match-Layers吸收层算法及其在PIC程序中的应用  

Convolutional Perfect-Match-Layers Absorption Algorithm and Its Application in Particle-in-Cell Package

作　　者：胡庆丰[1] 徐涵[1] 刘杰[1] 卓红斌[1] 迟利华[1] 蒋杰[1] 晏益慧[1] 

机构地区：[1]国防科技大学计算机学院,湖南长沙410073

出　　处：《计算机工程与科学》2009年第A01期188-190,共3页Computer Engineering & Science

基　　金：国家自然科学基金资助项目(60673150;60603061);国家863计划资助项目(2008AA01Z137)

摘　　要：基于卷积的PML吸收层算法能够吸收各种频率、各种传播方向、各种传播速度的电磁波,同时具有计算量小、吸收率高、可并行性好等突出特点。改进基于卷积的PML算法的差分形式,使之适合于PIC粒子模拟,编制了相应代码。对该算法的测试表明,对各种角度的散射电磁波振幅的吸收率达到0.999以上。The convoluation PML, as an effective method to truncate the FDTD lattices, has the good characteristics to absorb the electromagnetic wave propagated in almost any media with any frequency any incident angle and any polarization. The cPML method also shows a very high absorptivity, little comsumed cost of computing and easy to programming. We improve the cPML algorithm and implement it in our PIC software package LAPINE. Our test demonstrates that the absorptivity of electromagnetic wave can be up to 0. 999 with appropriate parameters.

关 键 词：吸收层算法 粒子模拟 时域有限差分法 

分 类 号：O411.3[理学—理论物理]