基于等高线的真实地形CFD建模方法  

A new modelling method of CFD real terrain based on contour lines

作　　者：郑远攀[1,2] 杨融[1] 王睿[1] 姚浩伟[3] 

机构地区：[1]郑州轻工业学院计算机与通信工程学院,河南郑州450001 [2]郑州轻工业学院应急平台信息技术河南省工程实验室,河南郑州450001 [3]郑州轻工业学院建筑环境工程学院,河南郑州450001

出　　处：《人民长江》2017年第15期40-45,共6页Yangtze River

基　　金：国家自然科学基金项目(51404216);河南省科技攻关项目(152102310374;132102210451);河南省高等学校青年骨干教师资助计划项目(2015GGJS-184);郑州轻工业学院青年骨干教师资助计划项目;应急平台信息技术河南省工程实验室开放基金项目

摘　　要：引入逆向工程建模思路,基于地形等高线,提出了一种真实地形CFD(Computational Fluid Dynamics)建模方法。通过对GIS地形数据的下载与处理,提取出研究区域等高线,进而利用等高线创建三角网格模型,结合逆向工程技术与三角网格模型生成地形网格模型。结果表明,该方法操作简便、生成模型精度高且建模效率高,有效地解决了使用常规建模方法存在的数据处理复杂、模型精度低以及不适用于大面积真实地形情况等问题,为真实地形的CFD数值模拟提供了支持。Based on reverse engineering technique and terrain contour lines, a new method of CFD （ Computational Fluid Dy-namics） terrain model generation is proposed. The contour lines information of study area was extracted by downloading and pro-cessing the shared geographic information system data and then the triangular mesh model could be created by using contour lines, finally, by combination with the reverse engineering technology and the triangular mesh model, terrain grids model can be generated. The experimental results show that the method is simple and the generated model has good accuracy with higher mod-eling efficiency, which can effectively solve the problems in conventional modeling methods, such as complex data processing, low model accuracy, and not suitable for large area of complex terrain, and provide a strong support for CFD numerical simulation of complex real terrain.

关 键 词：计算流体力学 等高线 逆向工程 地形建模 网格模型 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]