| 数字粒子图像处理技术及其在明渠交汇试验研究中流速测量的应用 |
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| 引用本文： | 茅泽育,张磊,陈嘉范,黄继汤.数字粒子图像处理技术及其在明渠交汇试验研究中流速测量的应用[J].水利学报,2003,34(6):65-71. |
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| 作者姓名： | 茅泽育 张磊 陈嘉范 黄继汤 |
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| 作者单位： | 清华大学,水利水电工程系,北京,100084 |
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| 基金项目： | 国家自然科学基金资助项目 ( 500 790 0 8) |
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| 摘 要： | 为了克服传统的点测量方法无法获取明渠交汇口非恒定流场同部信息的缺陷，本文应用DPIV(Digital Particle Image Velocimetry)数字粒子测速技术对明渠交汇口流场进行了实验研究。试验结果表明，对于给定交汇口形状及尺寸，分离区的大小主要随主支渠水流的流量比发生变化，但其形状基本保持不变。说明DPIV测速方法可直观完整地测量非恒定流动，且运算速度快，是研究复杂流场的有效工具。
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| 关 键 词： | 数字粒子测速 DPIV 交汇水流 流速场 互相关函数 |
| 文章编号： | 0559-9350(2003)06-0065-07 |
| 修稿时间： | 2003年1月6日 |
Application of digital particle image velocimetry technology to experimental study on flow at the confluence of channels |
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| MAO Zeyu.Application of digital particle image velocimetry technology to experimental study on flow at the confluence of channels[J].Journal of Hydraulic Engineering,2003,34(6):65-71. |
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| Authors: | MAO Zeyu |
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| Affiliation: | Tsinghua University |
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| Abstract: | The principle of DPIV (digital particle image velocimetry)technology is introduced and an improved measuring system for experimental study on open channel flow was established based on this principle. The flow field at the confluence of two channels is obtained and studied in detailed. It is found that the separated flow area is varied with the ratio of the main channel discharge to side inflow channel discharge but the basic scheme does not changed, if the configuration and dimensions of the confluence is given. |
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| Keywords: | DPIV technology flow field confluence of channel mutual correlation function |
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