网格划分形式对双圆柱串列绕流模拟的影响  

作　　者：张鸿清[1] 滕丽娟[2] 刘嘉伟 

机构地区：[1]河北工程大学水电学院,河北邯郸056001 [2]唐秦水文水资源勘测局,河北唐山063000 [3]承德水文水资源勘测局,河北承德067000

出　　处：《黑龙江科技信息》2011年第5期63-63,共1页Heilongjiang Science and Technology Information

摘　　要：应用流体软件Fluent,在二维层流模型下,模拟间距比为2.5的双圆柱串列绕流。两圆柱外围分别采用圆、正方形、六边形和半圆分块,构成结构网格和非结构网格共五种形式,对比流场形态和以往升阻力系数结果。结果表明:五种分块形式所得流场流态几乎一样,但三角形网格和混合网格等非结构网格有较强的边界适应性,而四边形结构网格可节省计算时间。可见,除半圆形分区非结构网格的升阻力系数出现非负外,其他几种网格均与前人研究较接近。Fluent software of fluid is used to simulate the spacing ratio of 2.5 serial flow around two circular cylinders in the two-dimensional laminar flow model.The circle of two circular cylinders uses round,square,hexagonal,and semi-circular block to constitute five forms＇ grid including structural and unstructured grids to contrast flow patterns and the results of the previous lift drag coefficient.The results showed that the flow field formed by five blocks almost haves the same flow,but the triangle mesh and hybrid mesh have strong boundary adaptation,however,computing time of the quadrilateral structured grid can be saved.,the lift drag coefficient of several other grid close to previous studies in addition to unstructured semicircular grid which appears non-negative.

关 键 词：FLUENT 圆柱绕流 网格划分 升阻力系数 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]