| 基于单曝光激光层析图像的粒子速度测量系统 |
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| 引用本文： | 杨宏旻,顾璠,刘勇,徐益谦.基于单曝光激光层析图像的粒子速度测量系统[J].南京师范大学学报,2002,2(2):56-60,83. |
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| 作者姓名： | 杨宏旻 顾璠 刘勇 徐益谦 |
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| 作者单位： | [1]南京师范大学动力工程学院，南京210042 [2]东南大学动力工程系,南京210096 |
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| 基金项目： | 973国家重点基础研究专项经费资助项目 (G19990 2 2 2 0 6)，南京师范大学高层次人才启动基金资助 |
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| 摘 要： | 首先对目前的PIV(Particle Imaging Velocimetry)技术进行了总结．针对该系统设备复杂、价格昂贵的现实，提出了一种利用对单次曝光的流场空间域激光层析图像进行两次傅立叶变换后获得的频域图像求得最大互相关系数的二维速度场测量的新思路．实验表明：利用该方案有可能开发出针对小速度测量范围的实用粒子图像测速仪．
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| 关 键 词： | 激光层析 单帧 粒子图像测速 |
| 文章编号： | 1672-1292(2002)02-0056-05 |
The Experimental Study on the Particle Imaging Velocimetry Based on Single Exposal Image |
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| Yang Hongmin ,Gu Fan ,Liu Yong ,Xu Yiqian.The Experimental Study on the Particle Imaging Velocimetry Based on Single Exposal Image[J].Journal of Nanjing Nor Univ: Eng and Technol,2002,2(2):56-60,83. |
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| Authors: | Yang Hongmin Gu Fan Liu Yong Xu Yiqian |
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| Affiliation: | Yang Hongmin 1,Gu Fan 2,Liu Yong 2,Xu Yiqian 2 |
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| Abstract: | The characteristics of different PIV (Particle Imaging Velocimetry) technologies ware generalized in this paper. In view of the complexity and high expense of these systems, a new approach to obtain the 2-D velocity field based on the twin FFT to the single spatial laser tomography images is proposed and a simple system based on this method is also developed. The experimental results show that good effect was achieved for the measuring range of low velocity and the PIV with lower expense can be expected. |
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| Keywords: | laser tomography image single exposal image Particle Imaging Velocimetry |
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