Vortex‐Induced Vibration of Circular Cylinders. I: Experimental Data
Vortex‐Induced Vibration of Circular Cylinders. I: Experimental Data
复制标题
DOI：
10.1061/(asce)0733-9399(1993)119:11(2270
复制
发表时间：
1993-11
期刊：
影响因子：
--
通讯作者：
Indranil Goswami;R. Scanlan;N. P. Jones
中科院分区：
文献类型：
--
作者：
Indranil Goswami;R. Scanlan;N. P. Jones
在低速风洞中观察到安装弹簧的圆柱体的涡流引起的响应。记录了圆柱体的垂直（升力）位移和上剪切层近尾流区域的速度波动。这些实验旨在深入了解各种控制变量对涡旋脱落和涡激振动演化的影响。这项研究包括入射流中均匀各向同性湍流的影响、机械阻尼的变化、气缸表面上人为固定的分离点以及气缸振动的不同初始条件。此外，除了观察经典同步现象外，还观察并记录了所谓的“交替同步”的表现。本文详细介绍了一些新数据。分析建模工作的结果在配套论文中给出。
Vortex‐induced response of a spring‐mounted circular cylinder was observed in a low‐speed wind tunnel. Vertical (lift) displacement of the cylinder and velocity fluctuations in the near wake region of the upper shear layer were recorded. The experiments were designed to provide insight into the effects of various control variables upon the evolution of vortex shedding and vortex‐induced vibration. Included in this study are the effects of homogeneous, isotropic turbulence in the incident flow, variation of mechanical damping, artificially fixed separation points on cylinder surface and different initial conditions for cylinder vibration. Also, in addition to the observation of the phenomenon of classical synchronization, manifestations of what may be termed “alternate synchronization” were also observed and recorded. This paper presents some of the new data in detail. The results from the analytical modeling effort are presented in the companion paper.