中国舰船研究Issue(2)：29-34,6.DOI:10.3969/j.issn.1673-3185.2015.02.006
共形FDTD网格剖分方法及其在舰船电磁环境效应仿真中的应用
A new conformal FDTD meshing technique for solving complex electromagnetic problems and relevant application for electromagnetic effect simulation on ship platforms
摘要
Abstract
Mesh generation is an important pre-process for the finite difference time domaln(FDTD)simu⁃lation algorithm. Most commercial softwares use triangle pieces to describe model geometry,while the FDTD algorithm must use rectangular cells to achieve the same end;thus,a meshing process is required in order to snip the original model into its FDTD computational region. The traditional origin-searching based meshing technique is low in both efficiency and accuracy. In this article,we detect the interception point between the model and the FDTD grid ray clusters based on the ray tracing technique,which generates the mesh information with high accuracy and efficiency. Furthermore,the multiple direction ray tracing technique is used in order to correctly capture the mesh for some special models. Finally,we apply the proposed method,combined with high-order conformal FDTD simulation algorithm,on an ship platform with alrcrafts, whose surface current distribution under a high power EMP incident wave is successfully simulated.关键词
FDTD/网格剖分/射线追踪/共形技术/电磁环境Key words
finite difference time domain(FDTD)/meshing/ray tracing/conformal technique/complex electromagnetic environment分类
交通工程引用本文复制引用
郭旸,王向华,胡骏..共形FDTD网格剖分方法及其在舰船电磁环境效应仿真中的应用[J].中国舰船研究,2015,(2):29-34,6.基金项目
国家级重大基础研究项目 （）
