...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Fluids and Structures >Towing tank experiments on the vortex-induced vibrations of low mass ratio long flexible cylinders
【24h】

Towing tank experiments on the vortex-induced vibrations of low mass ratio long flexible cylinders

机译：低质量比长挠性圆柱体的涡流振动牵引车实验

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A series of experiments describing the dynamic response resulting from vortex shedding excitation, on isolated long flexible cylinders with two different low mass ratios (mass to displaced fluid mass), are presented. The cylinder models had aspect ratios (length to diameter) of 158 and 187 and mass ratios of 1.1 and 2.7 respectively, both with very low damping (< 1% of critical). The models were towed to generate a stepped current in a 100 m long still water tank with a cross-section of 3.8 × 2.5 m, and curvatures were measured at 11 strain gauge stations distributed along the length of the models, resulting in an extensive data set. Reynolds numbers over 37 000 were reached and responding modes up to the fifth were observed, showing maximum amplitudes of more than 3 diameters in the model with the lowest mass ratio. Drag coefficients with values well over 3 were also measured.
机译：提出了一系列实验，描述了在两个不同的低质量比（质量与位移流体质量）的孤立的长形挠性圆柱体上，由涡旋脱落激发产生的动态响应。圆柱模型的纵横比（长径比）分别为158和187，质量比分别为1.1和2.7，两者都具有非常低的阻尼（小于临界值的1％）。拖曳这些模型，以在横截面为3.8×2.5 m的100 m长的静止水箱中产生阶跃电流，并在沿模型长度分布的11个应变仪站处测量了曲率，从而获得了广泛的数据组。雷诺数超过37000，观察到高达第五的响应模式，在质量比最低的模型中显示出超过3个直径的最大振幅。还测量了值超过3的阻力系数。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号