宽高比为4的矩形断面涡激振动响应数值模拟

刘志文;周帅;陈政清

振动与冲击 ›› 2011, Vol. 30 ›› Issue (11) : 153-156,.

PDF(2431 KB)
PDF(2431 KB)
振动与冲击 ›› 2011, Vol. 30 ›› Issue (11) : 153-156,.
论文

宽高比为4的矩形断面涡激振动响应数值模拟

  • 刘志文; 周帅; 陈政清
作者信息 +

Numerical simulation of vortex induced vibration of rectangular cylinder with aspect ratio 4

  • Liu Zhi-wen; Zhou Shuai; Chen Zheng-qing
Author information +
文章历史 +

摘要

采用二维雷诺平均(RANS)SST 湍流模型求解不可压缩粘性流体N-S方程,并将Newmark- 法代码嵌入Fluent UDF(用户自定义函数)中以求解结构振动响应,结合动网格技术对宽高比为4的矩形断面涡激振动响应进行了数值模拟。研究结果显示:宽高比为4的矩形断面涡激振动“锁定”区间以及涡激振动响应振幅的数值模拟结果与已有文献风洞试验结果吻合较好;表明采用该方法进行具有分离、再附现象的钝体断面涡激振动是可行的

Abstract

Numerical simulations of Vortex-induced vibration (VIV) of rectangular cylinder with aspect ratio 4 were conducted with the dynamic mesh in present paper. The two-dimensional Reynolds-averaged Navier-Stokes (RANS) code equipped with the SST turbulence model was applied to solve the N-S equations of incompressible viscous fluid. The equation of structural vibration was solved by Newmark- integration method which was embedded in Fluent with user defined functions (UDFs). The results show that the lock-in region and VIV amplitudes of the rectangular cylinder are agree well with the wind tunnel experimental results which have been published. And it is feasible to conduct the numerical simulation of VIV of bluff section with separation and reattachment phenomenon with the present method.

关键词

矩形断面 / 涡激振动 / 数值模拟 / 动网格 / 用户自定义函数

Key words

rectangular cylinder / vortex-induced vibration / numerical simulation / dynamic mesh / UDFs

引用本文

导出引用
刘志文;周帅;陈政清. 宽高比为4的矩形断面涡激振动响应数值模拟[J]. 振动与冲击, 2011, 30(11): 153-156,
Liu Zhi-wen;Zhou Shuai;Chen Zheng-qing. Numerical simulation of vortex induced vibration of rectangular cylinder with aspect ratio 4 [J]. Journal of Vibration and Shock, 2011, 30(11): 153-156,

PDF(2431 KB)

1189

Accesses

0

Citation

Detail

段落导航
相关文章

/