控制杆-强制旋转对圆柱涡激振动的抑制作用研究  

Suppression of cylindrical vortex induced vibration by control rods and forced rotation

作　　者：陈威[1] 刘炳文 刘家睿 王坤 包燕旭 唐国强[3] 李晓彬[1] CHEN Wei;LIU Bing-wen;LIU Jia-rui;WANG Kun;BAO Yan-xu;TANG Guo-qiang;LI Xiao-bin(School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China;School of Science,Wuhan University of Technology,Wuhan 430063,China;State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116023,China)

机构地区：[1]武汉理工大学船海与能源动力工程学院,武汉430063 [2]武汉理工大学理学院,武汉430063 [3]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116023

出　　处：《船舶力学》2024年第5期705-715,共11页Journal of Ship Mechanics

基　　金：大学生创新创业训练计划项目(S202210497220);国家自然科学基金资助项目(52201334);大连理工大学海岸和近海工程国家重点实验室开放基金项目(LP2203)。

摘　　要：为实现圆柱涡激振动的高效抑制,本文基于控制杆-强制旋转组合结构讨论圆柱涡激振动的抑制问题。对低雷诺数下的圆柱涡激振动进行数值模拟研究,对比分析不同控制杆数量和圆柱转速比下的流场特性、振动响应和流体力响应等。结果表明:与裸圆柱相比,控制杆具有一定的涡激振动抑制效果;对于三、五控制杆,通过调节转速比,可以实现最高98%的圆柱振幅抑制(对三控制杆,转速比为0.4~0.6;对五控制杆,转速比为0~0.2);圆柱振幅抑制与圆柱减阻区间相同;对于四、六控制杆,旋转对振幅抑制的影响较小;主圆柱表面的漩涡脱落和漩涡的合并会引起流体力系数的高幅波动,导致圆柱高振幅响应;没有漩涡合并和圆柱表面脱涡不明显时,流体力系数则无明显波动,圆柱振幅也显著降低。To effectively suppress cylindrical vortex induced vibration(VIV),the suppression of cylindrical VIV based on the combined control rod-forced rotation structure was discussed in this paper.Numerical sim⁃ulations of the cylindrical VIV at low Reynolds number were carried out for comparison and analysis of the flow characteristics,vibration response and hydrodynamic response under different numbers of control rods and rotation rates of the cylinder.The results show that compared with the bare cylinder,the control rods have a positive effect on VIV suppression.For three and five control rods,up to 98%of the cylindrical ampli⁃tude suppression can be achieved by adjusting the rotation rate(three control rods,rotation rate 0.4-0.6;five control rods,rotation rate 0-0.2).The amplitude suppression range of the cylinder is identical to the drag re⁃duction range of the cylinder.For the four and six control rods,the effect of rotation on amplitude suppression is small.Vortex shedding on the main cylindrical surface and vortex merging will cause high amplitude fluctu⁃ations in the fluid force coefficients,resulting in a high cylindrical amplitude response.For the cylindrical surface with no vortex merging and insignificant vortex shedding,there are no significant fluctuations in the fluid force coefficients and the cylindrical amplitude is significantly reduced.

关 键 词：涡激振动 圆柱 控制杆 流固耦合 旋转 

分 类 号：O352[理学—流体力学]