基于GIS的贴体坐标网格自动生成算法研究  

Research on the Algorithm for Body-Fitted Coordinate Grids Generation Based on GIS

作　　者：吴迪军[1,2] 孙海燕[1] 黄全义[3] 熊伟[2] 李静兰[1] 

机构地区：[1]武汉大学测绘学院,湖北武汉430079 [2]中铁大桥勘测设计院有限公司,湖北武汉430050 [3]清华大学公共安全研究中心,北京100084

出　　处：《测绘学报》2009年第2期156-161,共6页Acta Geodaetica et Cartographica Sinica

基　　金：国家自然科学基金(40274005)

摘　　要：贴体坐标网格生成算法是流体动力学等领域中进行数值模拟的关键技术问题。以往的研究很少与地理信息系统紧密结合,致使网格生成的自动化程度低;另一方面,纯力学问题中数值计算的稳定性和精度是首要问题,这无疑会影响到算法的效率。结合应急系统中快速反应的需求,本文提出一种基于GIS的贴体坐标网格自动生成算法,通过实例进行了算法的实现。The algorithm for body-fitted coordinate grids generation is one of the key techniques of numerical simulation in hydrokinetics. The previous researches on this technique were rarely combined with the Geographic Information System （GIS）, so resulting in a low-level atomization of grids generation. On the other hand, the stability and precision of numerical computation are the chief concerned matters in single kinetic issues, which undoubtedly reduce the computation speed. To meet the quick-reaction need of the Emergency System, an automatic generation algorithm of body-fitted coordinate grids based on GIS is then put forward. Finally, the algorithm is realized through an example.

关 键 词：GIS 贴体坐标网格 应急系统 

分 类 号：P208[天文地球—地图制图学与地理信息工程]