{"title":"求解多小阻抗体电磁散射问题的数值方法","authors":"Nhan Tran","doi":"10.4236/AJCM.2017.74031","DOIUrl":null,"url":null,"abstract":"In this paper, we study the problem of electromagnetic (EM) wave scattering by many small impedance bodies. A numerical method for solving this problem is presented. The problem is solved under the physical assumptions $a\\ll d \\ll \\lambda$, where $a$ is the characteristic size of the bodies, $d$ is the minimal distance between neighboring bodies, $\\lambda=2\\pi/k$ is the wave length and $k$ is the wave number. This problem is solved asymptotically and numerical results for the cases of 125 and 1000 small bodies are presented to illustrate the method. Error estimates for the asymptotic solutions are also provided.","PeriodicalId":331413,"journal":{"name":"arXiv: Classical Physics","volume":"15 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2014-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":"{\"title\":\"Numerical Method for Solving Electromagnetic Scattering Problem by Many Small Impedance Bodies\",\"authors\":\"Nhan Tran\",\"doi\":\"10.4236/AJCM.2017.74031\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper, we study the problem of electromagnetic (EM) wave scattering by many small impedance bodies. A numerical method for solving this problem is presented. The problem is solved under the physical assumptions $a\\\\ll d \\\\ll \\\\lambda$, where $a$ is the characteristic size of the bodies, $d$ is the minimal distance between neighboring bodies, $\\\\lambda=2\\\\pi/k$ is the wave length and $k$ is the wave number. This problem is solved asymptotically and numerical results for the cases of 125 and 1000 small bodies are presented to illustrate the method. Error estimates for the asymptotic solutions are also provided.\",\"PeriodicalId\":331413,\"journal\":{\"name\":\"arXiv: Classical Physics\",\"volume\":\"15 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2014-10-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv: Classical Physics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.4236/AJCM.2017.74031\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv: Classical Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4236/AJCM.2017.74031","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
摘要
本文研究了许多小阻抗体对电磁波的散射问题。给出了求解该问题的数值方法。在物理假设$a\ll d \ll \lambda$下求解问题,其中$a$为物体的特征尺寸,$d$为相邻物体之间的最小距离,$\lambda=2\pi/k$为波长,$k$为波数。该问题渐近求解,并给出了125和1000个小体的数值结果。给出了渐近解的误差估计。
Numerical Method for Solving Electromagnetic Scattering Problem by Many Small Impedance Bodies
In this paper, we study the problem of electromagnetic (EM) wave scattering by many small impedance bodies. A numerical method for solving this problem is presented. The problem is solved under the physical assumptions $a\ll d \ll \lambda$, where $a$ is the characteristic size of the bodies, $d$ is the minimal distance between neighboring bodies, $\lambda=2\pi/k$ is the wave length and $k$ is the wave number. This problem is solved asymptotically and numerical results for the cases of 125 and 1000 small bodies are presented to illustrate the method. Error estimates for the asymptotic solutions are also provided.