| 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): |
| 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 |
| Application of digital particle image velocimetry technology to experimental study on flow at the confluence of channels |
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| DOI： |
| 中文关键词: 数字粒子测速 DPIV 交汇水流 流速场 互相关函数 |
| 英文关键词: DPIV technology flow field confluence of channel mutual correlation function |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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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