• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference 2006 vol.4 pt.B: Fluid-Structure Interaction >EFFECT OF BUBBLES ON FLOW INDUCED VIBRATION
【24h】

EFFECT OF BUBBLES ON FLOW INDUCED VIBRATION

机译：气泡对流动引起的振动的影响

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

The effects of a turbulent, bubbly boundary layer on wall skin friction have been investigated in numerous previous studies. However, the impact of such a multiphase flow on fluid-structure interactions has not been studied. To this end, the present project examines experimentally the effect of a bubbly boundary layer on the vibration of a vertical plate. Using a combination of accelerometers and pressure transducers, we simultaneously measure the plate vibrations and wall pressure fluctuations for varying flow rates, gas void fractions, and characteristic bubble sizes. The results show that the presence of bubbles substantially increases both the plate vibrations and the wall pressure fluctuations. The vibrations increase by up to 20 dB compared to the same flow without bubbles. The spectra of vibrations become broad and vary significantly with the characteristic bubble size. The variations with bubble size are consistent with the resonant frequency of the bubbles, indicating that, in addition to changing the compressibility of the medium, individual bubbles act at sources.
机译：在许多先前的研究中已经研究了湍流，气泡边界层对壁皮肤摩擦的影响。然而，尚未研究这种多相流对流体-结构相互作用的影响。为此，本项目通过实验检验了气泡边界层对垂直板振动的影响。通过结合使用加速度计和压力传感器，我们可以同时测量板振动和壁压波动，以测量不同的流速，气体空隙率和特征性气泡大小。结果表明，气泡的存在显着增加了板振动和壁压力波动。与没有气泡的相同流量相比，振动增加了20 dB。振动的频谱变得很宽，并且随特征气泡的大小而变化很大。气泡大小的变化与气泡的共振频率一致，这表明，除了改变介质的可压缩性以外，各个气泡还作用于源头。

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