水沙数学模型与可视化系统的集成研究及应用（左利钦）
【作者】左利钦 【导师】陆永军
【作者基本信息】南京水利科学研究院，港口、海岸及近海工程，2006年，硕士
【中文摘要】 近年来，国内外很多高校和科研机构开发了水利工程数学模型软件。国外知名商业软件的水流部分相对比较成熟，但泥沙部分因公式选用、参数选取等方面的问题未能在我国得到较好的应用；国内的数值模拟系统集中在河流或河口海岸的单一地区，缺少适用于河流海岸水沙数值模拟与可视化系统的集成，且水流集成系统研究相对较多，泥沙集成系统研究相对较少。在这样一个背景下，本文开展了河流海岸水沙数值模拟与可视化系统的集成研究。 集成系统的开发基于VC++平台，计算模块以Fortran生成动态链接库(DLL)的形式集成到系统中；在以往研究的基础上，以VC++底层开发的方式实现了流场、流线、含沙量场、河床(海床)变形等动态制作和显示；针对AutoCAD软件的广泛应用，集成系统以读写DXF文件的方式与AutoCAD实现了互接；采用多线程编程技术，提高了程序运行效率。形成了包括前处理模块、计算模块、后处理模块的集成系统。系统的主要功能及特点如下： (1) 前处理实现了正交曲线网格的自动生成、绘制、地形数据的摘取等功能；计算模块可进行河道(恒定流)水沙数值计算、河口海岸(非恒定流)潮流泥沙及波—流共同作用下的泥沙模拟等，适用范围较...更多广，并实现了计算过程的实时显示，包括计算进度、水文要素及流场、含沙量场动态显示等；后处理实现了流场、流线、含沙量场、河床(海床)变形等动态可视化的制作和显示，并以AutoCAD的形式实现流场、等值线图的绘制。 (2) 系统的数值计算模块应用范围较广，综合河道及河口海岸地区水沙数值模拟于一体。 (3) 采用DLL，封装计算代码，可扩充性好，方便移植，计算模块升级较为方便。 (4) 给出了Windows风格的菜单、工具栏及窗口操作，界面友好，可视化程度高。 还原
【英文摘要】 Recently, software for mathematical models in hydraulic science is developed by many universities and iesearch institutes. There are some famous foreign softwares. Their flow modules are succeeded, while the sediment modules are not because of formula and parameters' applicability etc., so their sediment modules are not used commonly in our country. Domestic numerical model systems are applicable for river or estuarine and costal areas, but few for both. Another disadvantage about some domestic systems is more research about integration systems for flow module but less for sediment module. So it is necessary to do some research on integration system of flow-sediment numerical model and visualization that is applicable to fluvial, estuarine and costal areas.The integration system is based on VC++ language. The mathematical models are integrated by DLL(Dynamic Link Libraries) created by Fortran language. Based on previous research, the dynamic visualization for velocity field, flow strea...更多mline, sediment content, river bed (or sea bed) deformation etc. are developed by VC++. Considered that AutoCAD is used broadly, the integrated system make link with AutoCAD by DXF file. In order to make more efficient, the multithreading is used in the program. Then an integrated system is finished, which contains preprocessing module, calculate module, and post-processing module. The main function and features are:(1) The preprocessing module provided automatism creation and draw of orthogonal curvilinear coordinate grid. Another main function of preprocessing module is that terrain data on every gird node can be got from AutoCAD. The calculate module is adapt to river, estuarine and coastal areas. As for river, steady flow and sediment movement can be simulated. As for estuarine and coastal areas, tidal current and sediment transport that under action of tidal or both tidal and wave can be simulated. Real time visualization is applied, that is calculate progress, verification of hydrology elements (water/tidal level, velocity value, velocity angle, etc.), velocity field, sediment constration field and so on can be shown while calculating. The post-processing module applies the function of facture and show of dynamic visualization for velocity field, flow streamline, sediment 还原
【中文关键词】 水流; 泥沙; 数学模型; 可视化; 集成; 系统; DLL
【英文关键词】 flow; sediment; mathematical model; visualization; integration; system; DLL
