溃坝洪水演进的光滑粒子流体动力学分析  

SPH analysis of dam-break flood routing

作　　者：李忠[1,2] 唐新明[1] 李少达[2] 汪汇兵[1] 欧阳斯达[1] 

机构地区：[1]国家测绘地理信息局卫星测绘应用中心,北京101300 [2]成都理工大学地球科学学院,成都610059

出　　处：《测绘科学》2016年第10期115-119,148,共6页Science of Surveying and Mapping

基　　金：国际科技合作项目(2011DFG23330);国家科技支撑项目(2012BAH28B01);国家自然科学基金项目(41271394)

摘　　要：传统GIS在实现溃坝洪水过程模拟时通常是采用无源淹没分析或有源淹没分析方法,这些方法忽略了洪水演进过程中的物理学与动力学因素,模拟结果的时效性、可靠性较差,表达效果也较为简单。针对此问题,该文提出结合光滑粒子流体动力学方法与GIS相关技术实现溃坝洪水演进的三维动态可视化及分析,以光滑粒子流体动力学生成的海量多维时空序列流体粒子数据为基础,研究了粒子数据的建模及时空数据的时空建模技术。最后在自主研发的系统中实现了溃坝洪水演进的三维动态可视化表达及分析,应用效果良好。Normally traditional GIS uses non-source flood or source flood in fulfilling the dam-break flood process simulation, these methods ignore the physics and dynamics factors in the process of flood routing, the simulation results of timeliness and reliability are poor, also the effect of expression is relatively simple. Aiming at this problem, the 3D dynamic visualization and analysis of dam-break flood routing was realized combining with the smooth particle hydrodynamics （SPH） method and GIS technology in this paper, the particle data modeling and spatio-temporal modeling technology were researched based on the huge amounts of multidimensional spatio-temporal sequence of fluid particles generated by smooth particle hydrodynamics. Finally, the 3D dynamic visualization and analysis of dam-break flood routing were realized in the independent development of the system, and the application effect was good.

关 键 词：溃坝洪水 光滑粒子流体动力学 地理信息系统 时空建模 三维动态可视化 

分 类 号：P208[天文地球—地图制图学与地理信息工程]