动波壁对圆柱体涡激振动的抑制作用研究  

Suppressing vortex induced vibration of an elastic mounted circular cylinder by wavy wall

作　　者：朱仁庆 张友林[1] 

机构地区：[1]江苏科技大学船舶与海洋工程学院,江苏镇江212003

出　　处：《船舶力学》2011年第11期1203-1209,共7页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(50879030);江苏高校优势学科建设工程资助项目

摘　　要：文章基于有限体积法,通过控制壁面的波动方式,考察了动波浪壁面对低雷诺数下两自由度弹性支撑圆柱体涡激振动的抑制作用。结果表明:由圆柱两侧向下游行进的壁面波能抑制漩涡的脱落;适当的壁面波动频率能大幅降低圆柱的横向振动;当雷诺数Re=500时,随着约化速度的增大,动波壁圆柱的横向位移值相对标准圆柱体始终维持在较低值区间内(0～0.05D),动波壁圆柱流向位移值相对标准圆柱体的减小幅度逐渐增加。Wavy wall method is used to suppressing vortex induced vibration of an elastic mounted circular cylinder which is free to move in-line（X-Direction） and transverse（Y-Direction） to the flow.The simulation is processed with low Reynolds number（Re） and based on finite volume method（FVD）.The results show that wavy wall which travels from double sides of circular cylinder to downstream is found to be very effective in suppressing VIV by detuning vortex shedding.Response of Y-Direction is reduced greatly while use appropriate frequency,and maintains in the interval between 0 and 0.05D（D is the diameter of cylinder） with the increase of reduced speeds and fixed Reynolds number 500.Besides,the difference-value between wavy wall cylinder and standard cylinder increases.

关 键 词：涡激振动 动波壁圆柱 主动控制 弹性支撑 CFD 

分 类 号：O327[理学—一般力学与力学基础]