适应复杂外形的三维粘性混合网格生成算法  

Hybrid mesh generation algorithm for viscous computations of complex aerodynamics configurations

作　　者：陈建军[1] 曹建[1] 徐彦[1] 王康健[2] 赵大伟[1] 郑耀[1] 

机构地区：[1]浙江大学工程与科学计算研究中心,浙江大学航空航天学院,杭州310027 [2]中国计量学院信息工程分院,杭州310027

出　　处：《计算力学学报》2014年第3期363-370,共8页Chinese Journal of Computational Mechanics

基　　金：国家自然科学基金(11172267;10872182;61100160);浙江省自然科学基金(Y1110038);中央高校基本科研业务费(2012FZA4026);国家科技支撑计划项目(2009BAG12A01-C02);国家水体污染控制与治理科技重大专项(2009ZX07424-001)

摘　　要：提出一类适应复杂外形的粘性混合网格生成算法。表面网格由前沿推进三角形曲面网格程序获得,边界层布置各向异性的三棱柱体网格,远物面区域采用Delaunay方法生成四面体网格。针对模型的复杂几何特征,综合采用了各种网格处理技术,以保证边界层网格的质量,并避免算法失效问题。网格实例及计算结果表明了本文算法的实用性及和效性。A hybrid mesh generation algorithm is proposed for viscous computations of three-dimensional complex aerodynamics models.An initial surface mesh is generated by an advancing front triangulator.Then the boundary layer is configured with anisotropic prismatic elements by an advancing layer mesher.In this step,focuses are on the management of local complex geometric details,aiming at improvement of robustness and quality of boundary layer elements.After boundary layer mesh generation,the unmeshed region,i.e.,the far field of the computational domain,is filled with isotropic tetrahedral elements by employing a Delaunay-type mesher.Finally,meshes and simulation results of two benchmarks are presented to demonstrate the efficiency and effectiveness of the proposed algorithm.

关 键 词：网格生成 混合网格 单元质量 粘性计算 

分 类 号：O242.21[理学—计算数学]