...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ocean Engineering >Comparative study of a vertical round jet in regular and random waves
【24h】

Comparative study of a vertical round jet in regular and random waves

机译：规则波和随机波中垂直圆形射流的比较研究

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 hydrodynamic behaviors of a vertical round jet in regular and random waves are comparatively investigated. The regular and the random waves are chosen based on the concept of equivalent energy density and energy flux. The experimental study is first carried out to compare the lateral profiles of jet mean axial velocity at various vertical levels. The results show that, under the present experimental conditions, the phenomenon of "twin peaks" appears in the regular waves, but virtually does not exist in the corresponding random waves. This results in a lower axial velocity along the centerline for the jet in the regular waves. A large eddy simulation (LES) model is subsequently developed to quantify the difference of jet half-width under the same wave conditions as those in the laboratory. The numerical results show that the jet in the random waves has a larger jet half-width than that in the regular waves, which is consistent with the visual observations in laboratory experiments. More scenarios of the jet in different regular and random waves are numerically investigated and the results show that the "twin peaks" may also appear under the condition of random waves, but requiring a larger wave-to-jet momentum ratio.
机译：垂直圆形射流在规则波和随机波中的流体动力学行为进行了比较研究。基于等效能量密度和能量通量的概念选择规则波和随机波。首先进行实验研究，以比较各种垂直水平的射流平均轴向速度的横向分布。结果表明，在目前的实验条件下，“双峰”现象出现在规则波中，而实际上在相应的随机波中不存在。这导致沿规则波中的射流沿中心线的轴向速度较低。随后开发了一个大型涡流模拟（LES）模型，以量化与实验室相同的波浪条件下射流半宽度的差异。数值结果表明，随机波中的射流具有比规则波中更大的射流半宽度，这与实验室实验中的目测观察结果是一致的。数值研究了不同规则波和随机波中更多的射流情形，结果表明在随机波条件下也可能出现“双峰”，但需要更大的波流动量比。

著录项

  • 来源
    《Ocean Engineering》 |2014年第1期|200-210|共11页
  • 作者

    Zhenshan Xu; Yongping Chen; Changkuan Zhang; Chi-wai Li; Yana Wang; Fei Hu;

  • 作者单位

    State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China,College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China;

    State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China,College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China;

    College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China;

    Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong, China;

    College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China;

    College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Turbulent jet; Regular waves; Random waves; Equivalent energy density; Equivalent energy flux; Twin peaks;

    机译：湍流射流规则波浪;随机波;等效能量密度等效能量通量;双峰;

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