一种基于点云数据的复杂地形CFD网格生成方法  

A method for grids formation based on point cloud data complex terrain CFD

作　　者：刘新新[1] 甘勇[1,2] 郑远攀[1,2] 

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]应急平台信息技术河南省工程实验室,河南郑州450001

出　　处：《郑州轻工业学院学报（自然科学版）》2012年第6期73-77,共5页Journal of Zhengzhou University of Light Industry:Natural Science

基　　金：河南省科技攻关计划项目(102102310030);郑州轻工业学院博士基金项目(2010BSJJ006);郑州市科技创新团队计划项目(112PCXTD344)

摘　　要：针对CFD网格生成中地形数据精确度不高的问题,提出一种基于点云数据的复杂地形CFD网格生成方法.该方法引入七参数求解方法生成地方坐标点云文件,采用点—线—面—体方式生成地形网格,并基于多面体网格转换方法进行网格优化.实例验证结果表明,生成的地形网格与实际地形吻合度高、数据精确度高,适合用于后期的CFD精细模拟应用.Aiming at the problem that terrain data accuracy is not high in CFD grid generation, a grid gen- eration method based on point cloud data complex terrain CFD was put forward. This method generates the local coordinates of the point cloud file through the introduction of a seven-parameter solution method, and by the point - line - face - volume method for mesh generation, further polyhedral mesh conversion, the terrain mesh is optimized. The example validation showed that the application of method can generate high accuracy data and consistent with the actual terrain mesh, is suitable for the later stage of the fine CFD sim- ulation applications.

关 键 词：网格生成 七参数 复杂地形 多面体网格转换 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]