Kinematics and forces of a flexible body in Karman vortex street

作     者：WANG SiYing JIA LaiBing YIN XieZhen 

作者机构：Department of Modern Mechanics University of Science and Technology of China Hefei Anhui 230027 China 

出 版 物：《Chinese Science Bulletin》 (Chin. Sci. Bull.)

年 卷 期：2009年第54卷第4期

页      面：556-561页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 10832010) Innovation Project of Chinese Academy of Sciences (Grant No. KJCX2-YW-L05) 

主　　题：卡曼旋涡流 柔韧细丝 肥皂膜 阻力系数 

摘      要：Experiments of a flexible filament in the wake of a cylinder and in free stream were conducted in a vertical soap film tunnel. The experiments distinctly visualized the movement of the filament. Based on the experimental kinematic results, a 2-d panel method was used to calculate the forces acting on the filament. The experiment and numerical results revealed that different from that in free stream, the filament in Karman vortex street flapped at the same frequency as the vortex street, and with smaller amplitude and larger curvature. The filament suffered an evident thrust in Karman vortex street, while a drag appeared in the case of free stream. The dependence of the drag coefficient on the phase relation between the movement of the filament and the Karman vortex street was also studied.