| 地学现象三维空间模拟-以点源烟气扩散为例 |
| |
| 引用本文： | 盛业华,刘平,袁林旺,叶春,黄云,黄亮.地学现象三维空间模拟-以点源烟气扩散为例[J].地球信息科学,2005,7(3):16-20. |
| |
| 作者姓名： | 盛业华 刘平 袁林旺 叶春 黄云 黄亮 |
| |
| 作者单位： | 南京师范大学地理信息科学江苏省重点实验室,南京,210097;南京师范大学地理信息科学江苏省重点实验室,南京,210097;南京师范大学地理信息科学江苏省重点实验室,南京,210097;南京师范大学地理信息科学江苏省重点实验室,南京,210097;南京师范大学地理信息科学江苏省重点实验室,南京,210097;南京师范大学地理信息科学江苏省重点实验室,南京,210097 |
| |
| 基金项目： | 南京师范大学校科研和教改项目 |
| |
| 摘 要： | 探讨地学现象三维空间模拟的方法。将地学现象所在的三维空间以规则六面体格网形式离散为一个个相互连接的格网单元,运用相应地学模型计算规则六面体各顶点的属性值,再用MC方法追踪形成等值面,以此来表示地学现象的三维空间状态。以点源烟气扩散中烟气的三维浓度模拟为例,验证了这一空间模拟方法的有效性和直观性。
|
| 关 键 词： | 地学现象 空间模拟 空间离散 等值面 烟气扩散 |
| 收稿时间： | 2004-11-17 |
| 修稿时间： | 2004年11月17 |
Three Dimensional Spatial Simulation of Geo-Phenomena: Taking Smoke Diffusion from Point Sources as an Example |
| |
| SHENG Yehua,LIU Ping,YUAN Linwang,YE Chun,HUANG Yun,HUANG Liang.Three Dimensional Spatial Simulation of Geo-Phenomena: Taking Smoke Diffusion from Point Sources as an Example[J].Geo-information Science,2005,7(3):16-20. |
| |
| Authors: | SHENG Yehua LIU Ping YUAN Linwang YE Chun HUANG Yun HUANG Liang |
| |
| Institution: | Provincial Key Lab of GIS, Nanjing Normal University, Nanjing 210097, China |
| |
| Abstract: | The problem of three-dimensional spatial simulation is discussed in this paper. Firstly, the threedimensional space where any geo-phenomenon is located is discretized in regular hexahedrons which topology and geometry are simple. Secondly, the attribute of every vertex in each hexahedron cell is calculated with the appreciate geo-model. Finally, the marching cube approach is used to process the scalar values of every vertex and the isosurface is tracked. The resulted iso-surface and further processed three dimensional contours are used to express the distribution and state of this geo-phenomenon. The smoke concentration in three-dimensional space pervaded from point sources is simulated with this simulating approach. The result shows that this three-dimensional simulation approach is effective and intuitionistic. |
| |
| Keywords: | geo-phenomenon spatial simulation spatial discretizing iso-surface smoke diffusion |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《地球信息科学》浏览原始摘要信息 |
| 点击此处可从《地球信息科学》下载免费的PDF全文 |
|
