两串列方柱绕流的干扰数值研究  

Numerical Computation of the Flow around Two Square Cylinders in Tandem Arrangement

作　　者：陈素琴[1] 黄自萍[1] 沈剑华[1] 顾明[2] 

机构地区：[1]同济大学应用数学系,上海200092 [2]同济大学桥梁工程系,上海200092

出　　处：《同济大学学报（自然科学版）》2001年第3期320-325,共6页Journal of Tongji University:Natural Science

基　　金：国家杰出青年科学基金!资助项目 (5 972 5 818) ;国家自然科学基金资助重大基金!项目 (5 9895 410 ) ;国家自然科学基金!资助项目 (1

摘　　要：用数值方法研究了绕流两串列方柱的气动力及其相互干扰 ,使用了经改进的标志网格 (MAC)方法对相同尺寸的方柱在不同间距比下的流场进行了数值模拟 .结果表明 :实验中观测到的两串列方柱的阻力不随两方柱的间距比连续变化 ,而是在临界间距比时出现不连续跳跃的现象得到了成功的再现 ,数值计算所得的阻力值与风洞实验值吻合得比较好 .Two (2D) dimensional numerical analyses for flow around two square cylinders in tandem arrangement are performed with various column spacings, using an improved MAC (marker cell)method proposed by the authors. The computed values are compared with the wind tunnel results in term of the aerodynamic forces of the two square cylinders. The existence of the critical arrangements in which the discontinuous change appears on the curve of drag forces observed in experiments is revealed in the 2D computations. The drag computed forces with Re =10 4 agree well with the experimental values.

关 键 词：串列方柱 标志网格方法 多重网格方法 绕流 气动力干扰 计算流体力学 建筑物 抗风设计 流场 

分 类 号：TU323.101[建筑科学—结构工程]