| 桥墩紊流宽度的试验研究 |
| |
| 引用本文： | 何小花,陈立,王鑫,张炯.桥墩紊流宽度的试验研究[J].水利水运工程学报,2006,0(3):49-53. |
| |
| 作者姓名： | 何小花 陈立 王鑫 张炯 |
| |
| 作者单位： | 武汉大学,水资源与水电工程科学国家重点实验室,湖北,武汉,430072 |
| |
| 基金项目： | 973资助项目(2003CB415205)，国家自然科学基金资助项目(50479036) |
| |
| 摘 要： | 通过概化水槽试验,采用M icroADV流速仪测量瞬时流速,得到桥墩周围纵向、横向和垂向时均流速和紊流强度的横向分布.比较了有、无桥墩的时均流速和紊流强度横向分布变化,得出桥墩对时均流速和紊流强度的影响幅度和范围,据此确定桥墩侧边缘的紊流宽度,并给出了桥墩最大紊流宽度随断面平均流速变化的关系.
|
| 关 键 词： | 断面平均流速 时均流速 紊流强度 紊流宽度 桥墩 概化水槽试验 |
| 文章编号： | 1009-640X(2006)03-0049-05 |
| 收稿时间： | 2006-02-22 |
| 修稿时间： | 2006年2月22日 |
Experimental study of turbulent width at piers |
| |
| HE Xiao-hu,CHEN Li,WANG Xin,ZHANG Jiong.Experimental study of turbulent width at piers[J].Hydro-Science and Engineering,2006,0(3):49-53. |
| |
| Authors: | HE Xiao-hu CHEN Li WANG Xin ZHANG Jiong |
| |
| Affiliation: | State Key Laboratory of Water Resources and Hydropower Engineering Sciences, Wuhan University, Wuhan 430072, China |
| |
| Abstract: | By conceptual flume experiments,the longitudinal,lateral and vertical time-average velocity and lateral distribution of turbulent intensity around a!pier are presented by using a Micro Acoustic-Doppler Velocimeter(MicroADV) to measure the instantaneous velocity.Comparison of time-average velocity and lateral distribution of turbulent intensity with and without piers is carried out,influences of the pier on time-average velocity and turbulent intensity are presented,turbulent width at the edge of a pier and the relationship between the maximum width of turbulent and mean velocity in section are also presented. |
| |
| Keywords: | mean velocity in section time-average velocity turbulent intensity turbulent width pier conceptual flume experiment |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《水利水运工程学报》浏览原始摘要信息 |
|
点击此处可从《水利水运工程学报》下载全文 |
