| 用自相关法测量横向流速 |
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| 引用本文： | 周红仙,周有平,王毅. 用自相关法测量横向流速[J]. 物理实验, 2012, 32(5): 6-8,16 |
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| 作者姓名： | 周红仙 周有平 王毅 |
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| 作者单位： | 佛山科学技术学院光电工程系,广东佛山,528000 |
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| 基金项目： | 教育部留学回国人员科研启动基金资助项目，广东省高校实验教学示范中心资助项目 |
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| 摘 要： | 以LabVIEW为平台,搭建了横向流速测量实验系统.流动微粒对探测光起阻挡作用,导致透射信号强弱变化,通过归一化自相关函数可以计算粒子通过探测区域的渡越时间,测量探测区域宽度后,可以计算得到流速.
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| 关 键 词： | 横向流速 自相关 渡越时间 |
Measuring transverse velocity by autocorrelation |
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| ZHOU Hong-xian , ZHOU You-ping , WANG Yi. Measuring transverse velocity by autocorrelation[J]. Physics Experimentation, 2012, 32(5): 6-8,16 |
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| Authors: | ZHOU Hong-xian ZHOU You-ping WANG Yi |
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| Affiliation: | (Department of Photoelectronic Engineering,Foshan University,Foshan 528000,China) |
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| Abstract: | A transverse velocity measuring system was set up on LabVIEW platform.The transmission light intensity changed because of the blocking effect of the flowing particles on light transmission.The transit time of a particle through the area of detection was calculated by normalized autocorrelation.The transverse velocity was calculated after obtaining the width of detection area. |
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| Keywords: | transvers velocity autocorrelation transit time |
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