适合地形起伏的二维有限单元数值模拟技术  

2D FEM NUMERICAL SIMULATION ADAPTED TO THE FLUCTUANT TOPOGRAPHY

作　　者：刘树才[1] 何昭友[1] 刘志新[1] 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221008

出　　处：《物探化探计算技术》2005年第2期131-134,共4页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：在有限单元法矩形～三角形单元剖分的基础上,提出了适合复杂地形条件下的网格剖分方法:平行四边形～三角形剖分方法。计算结果表明,该方法具有快速、高效的特点。只要对原有程序稍加修改,即可实现对复杂地形条件下的复杂地电断面进行自动剖分和网格节点自动编号。因此,对于复杂地形条件下的地电模型,该方法能快速地实现较为精确的数值模拟。Based on the rectangle-triangle mesh division method of FEM, this paper proposed a reformative method: parallelogram-triangle mesh division, which adapts to intricate topographic condition. The result of calculation shows that it has the characters of high operation speed and efficiency etc.. After simply reconstructed, this method can divide and demarcate the mesh automatically on intricate geoelectric section. So that we can rapidly obtain more accurate numerical simulation result of geologic abnormity under various topographic conditions.

关 键 词：有限单元法 地形影响 网格剖分 数值模拟 

分 类 号：P631.3[天文地球—地质矿产勘探]