| 珠江河口底边界层湍流积分尺度研究 |
| |
| 引用本文： | 刘欢,吴超羽,许炜铭.珠江河口底边界层湍流积分尺度研究[J].海洋工程,2008,26(4). |
| |
| 作者姓名： | 刘欢 吴超羽 许炜铭 |
| |
| 作者单位： | 1. 中山大学,工学院力学系,广东,广州510275
2. 中山大学,近岸海洋研究中心,广东,广州510275 |
| |
| 基金项目： | 国家自然科学基金资助项目，"973"资助项目 |
| |
| 摘 要： | 介绍湍流积分尺度的几种常用计算方法.基于三组珠江口崖门的湍流观测资料,分别计算了一个潮周期内珠江口底边界层湍流积分尺度的变化,并对比不同计算方法的稳定性.计算结果表明,基于Taylor假定的自相关函数积分法的计算结果稳定可靠.湍流积分尺度在一个潮周期内的变化很大,积分尺度的变化与平均流的流速变化有着很好的对应关系,三个测次纵向、横向和垂向积分尺度的平均值分别约为4.9～10.4 cm、3.3～6.2 cm和4.3～5.2 cm.
|
| 关 键 词： | 底边界层 湍流 积分尺度 珠江河口 |
Research of turbulent flow integral length scale on the bottom boundary layer in the Pearl River |
| |
| LIU Huan,WU Chao-yu,XU Wei-ming.Research of turbulent flow integral length scale on the bottom boundary layer in the Pearl River[J].Ocean Engineering,2008,26(4). |
| |
| Authors: | LIU Huan WU Chao-yu XU Wei-ming |
| |
| Institution: | LIU Huan1,WU Chao-yu2,XU Wei-ming1(1.Department of Applied Mechanics , Engineering,Sun Yat-sen University,Guangzhou 510275,China,2.Research Center of Coastal Ocean Science , Technology,China) |
| |
| Abstract: | In this paper,several calculation methods for turbulent flow integral length scale are presented.The turbulent flow integral length scale in a tidal cycle is studied based on the three sets of data of Yamen in the Pearl River,and the stabilization of the calculation methods is investigated.The results show that the method of integration of auto-correlation function based on Taylor hypothesis is the most steady and most reliable.The turbulent flow integral length scale changes obviously in a tidal cycle,whic... |
| |
| Keywords: | bottom boundary layer turbulence flow integral length scale Pearl River |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《海洋工程》浏览原始摘要信息 |
| 点击此处可从《海洋工程》下载免费的PDF全文 |
|
