Estimation of Oscillation Amplitudes of Rectangular Cylinders at Combined VIV and Galloping-Part I:Parametric Analysis
Rectangular cylinders may experience the wind-induced soft galloping when the onset wind velocities of vortex-induced vibration (VIV) and galloping are relatively close to each other, which is characterized by the approximately linear variation of oscillation amplitude with wind velocity.In this study, the oscillation characteristics of a typical rectangular cylinder with the side ratio of 1 : 1.4 undergoing soft galloping is inves tigated though wind tunnel tests and numerical simulations.The numerical simulations based on Tamura-Shi mada model are implemented to investigate the effects of structural and fluid parameters on response charac teristics of soft galloping, and the numerical results are also compared to wind tunnel tests.It is shown that the structural and fluid parameters have minor effects on the linear slope of galloping amplitude and that the side ratio of the section affects greatly on the linear slope, implying that the side ratio of the sections is the key parameters for estimating the linear slope of the vibration amplitude during soft galloping.
Shuai Zhou Zhengqing Chen Xugang Hua Huawei Niu
Wind Engineering Research Center of Hunan University, Changsha, Hunan, China
国际会议
哈尔滨
英文
913-919
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）