自激振动圆柱体湍流场及发展变化的研究  

Computation of a turbulence flow and its development around a self-induced vibrating circular cylinder

作　　者：林琳[1] 王言英[1] 

机构地区：[1]大连理工大学船舶工程学院,辽宁大连116024

出　　处：《振动与冲击》2013年第14期164-173,共10页Journal of Vibration and Shock

基　　金：国家"863"高技术研究发展计划赞助项目(2006AA09A104)

摘　　要：采用雷诺平均法模拟低质量比弹性支撑的刚性圆柱体在均匀来流中的涡激振动问题,是近年来人们研究的热点。本文采用有限体积法结合SST k-ω湍流模型求解时间平均的纳维尔———斯托克斯方程(RANS),对低质量比弹性支撑的刚性圆柱体在均匀来流中横向振动的三个响应分支(初始分支、上端分支和下端分支)湍流场及其发展变化进行了研究,并与同等雷诺数下固定圆柱体的湍流场进行了对比。结果表明:三个响应分支的流体力系数、壁面压力系数、壁面切应力、流向平均速度、流向速度的脉动、横向速度的脉动、雷诺应力、湍流动能和涡量的分布均与固定圆柱体有明显差异。Applying Reynolds-averaged Navier-Stokes equation（RANS） to solve a vortex induced vibration problem is a hot topic in recent years.Here,SST k-ω turbulence model was adopted to predict transverse vortex induced vibration of an elastically supported rigid cylinder with a low mass ratio in a uniform fluid flow.By comparing turbulence fields and their developments of three different response branches of the rigid cylinder and the turbulence field of a static cylinder with the coequal Reynolds number,some differences were observed.It was shown that pressure coefficient on the wall of the rigid cylinder,shear stress on the wall of the rigid cylinder,mean streamwise velocity,streamwise velocity fluctuation,cross-flow velocity fluctuation and Reynolds shear stress of three branches of the rigid cylinder are different from those of the static cylinder.

关 键 词：涡激振动 计算流体力学 SST k-ω湍流模型 振动圆柱体 湍流场 

分 类 号：U671.5[交通运输工程—船舶及航道工程]