...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ocean Engineering >Boundary layer turbulence statistics over transitionally rough marine fouling control coatings
【24h】

Boundary layer turbulence statistics over transitionally rough marine fouling control coatings

机译：过渡性粗糙海洋污垢控制涂层边界层湍流统计

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 results of a dedicated boundary layer measurement campaign, which was conducted by using a 2D LDV system over transitionally rough and irregular marine surfaces in a large flow-channel, are presented and discussed in this study. The experimental campaign aimed to investigate the turbulence statistics for zero-pressure gradient turbulent boundary layers developed over marine fouling control coatings, which represent transitionally rough and irregular surfaces, along with hydraulically smooth and fully-rough reference surfaces. A particular emphasis was placed on the wall outer layer similarity. At the same time, the main characteristics of the boundary layer flow such as the velocity defect profiles, Reynolds stresses, triple correlations of turbulence velocities, skewness distributions and flatness factors were comparatively discussed for six different surfaces. The surface roughness properties, boundary layer characteristic parameters, wake parameters and frictional drag properties were also presented for the tested surfaces along with their roughness functions. The outer layer similarity was observed for the surfaces coated with the fouling control coatings in general. The current study presented, perhaps for the first time in such details, the higher-order statistics of turbulence for the turbulent boundary layer flow developed over the state-of-the-art marine fouling control coatings.
机译：通过在大型流道中使用2D LDV系统在大流动通道中使用2D LDV系统进行的专用边界层测量活动的结果，并在本研究中讨论。实验活动旨在调查在海洋污垢控制涂层上产生的零压梯度湍流边界层的湍流统计，其代表过渡性粗糙和不规则表面，以及液压平滑和完全粗糙的参考表面。特别强调墙体外层相似性。同时，边界层流动的主要特征如速度缺陷型材，雷诺应力，湍流速度的三倍相关，偏差分布和平坦因子的六种不同的表面相对讨论。还呈现了测试表面以及其粗糙度函数的表面粗糙度，边界层特征参数，唤醒参数和摩擦阻力牵引性能。对于涂有污垢控制涂层的表面，观察到外层相似度。目前的研究介绍，也许是在这些细节中首次，对于在最先进的海洋污垢控制涂层上产生的湍流边界层流动的湍流的高阶统计。

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