一种适用于电磁法数值模拟的二维建模与网格剖分方法  

The Method of 2D Modeling and Grid Subdivision for Electromagnetic Numerical Simulation

作　　者：何畏[1,2] 吴文鹂 顾观文[1,2] 梁萌[1,2] 陈实 冯斌[1,2] 

机构地区：[1]中国地质科学院地球物理地球化学勘查研究所,廊坊065000 [2]国土资源部地球物理电磁法探测技术重点实验室,廊坊065000

出　　处：《物探化探计算技术》2017年第6期719-726,共8页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：国家重大科学仪器设备开发专项(2011YQ050060);国家"863"高科技研究发展计划重点课题(SS2014AA063110);中国地质大调查项目(12120113100600;DD20179374)

摘　　要：为满足电磁法二维数值模拟解释对交互建模与可视化网格剖分的需求,利用计算机图形学、人机交互、拓扑关系学等技术,设计了基于测线、测点等信息的二维矢量建模、四边形和三角形网格剖分方法与流程,并开发形成了软件模块。该方法与软件可提供起伏地形下大地电磁、可控源音频大地电磁法二维数值模拟的三角形、四边形网格(下边界随地形变化或平地形)剖分实用化工具。将该方法应用到多种模型试验中,取得了良好的建模与网格剖分效果。Interactive modeling and visualization mesh generation are very important parts inmensional numerical simulation. Using some techniques such as computer graphics,human-computer interaction,topological relation,etc.,we designed method and process about the two - dimensional vector modeling, quadrilateral mesh generation,triangular mesh generation. In method,it contains measuring lines,measuring points information, etc. . Through the study,the corresponding software module was developed. In the he method and software, some triangulation mesh generation andquadrilateral mesh generation utility tools can be provided to solve some related problems in MT and CSAMT. A large number of model tests have been carried out,also good modeling and mesh generation effects were achieved.

关 键 词：大地电磁 可控源音频大地电磁 二维建模 网格剖分 四边形 三角形 

分 类 号：TP317.4[自动化与计算机技术—计算机软件与理论]