Interference between two circular cylinders forming a cross
Interference between two circular cylinders forming a cross
复制标题
DOI：
10.1017/s0022112083000464
复制
发表时间：
1983-03
影响因子：
3.7
通讯作者：
M. Zdravkovich
中科院分区：
文献类型：
--
作者：
M. Zdravkovich
绕两个形成十字形的圆柱体的流动干扰可以被认为是丝网筛或海上结构物的一个元件。干扰的最重要的特征被发现是由于对称形成的二次流图案的局部阻力系数的显着增加。在不同展向位置测量的两个圆柱周围的压力分布在干涉区域内明显不同。在上游圆柱体的后面和下游圆柱体的前面发现了一个很强的二次流。二次流使上下游圆柱体上的分离流线发生畸变和位移。油膜流动显示证实了这一点。
The interference of flow around two circular cylinders forming a cross can be considered as an element of a gauze screen or an offshore structure. The most important feature of the interference was found to be a significant increase of local drag coefficient due to the symmetric formation of secondary flow patterns. The pressure distribution measured around both cylinders at various spanwise stations was distinctly different for the two cylinders in the region of interference. A strong secondary flow was found behind the upstream cylinder and in front of the downstream cylinder. The secondary flow distorted and displaced the separation streamlines on the upstream and downstream cylinders. This has been verified by oil-film flow visualization.