摘要
A display and analysis system for hermetical flow field in water tunnel is developed based on the particle image velocimetry(PIV)technology.It consists of some subsystems,such as lamp-house,imaging,image processing and analyzing,control and particles putting.Taking the flow fields around a sphere and a cylinder model as an example under higher Renolds number 5.8×105 in water tunnel,we inquired into the application of the system to water tunnel experiment by cross correlation algorithm.The measure error is less than 2%.The test results show that the developed system can measure and display the flow field accurately in complex flow field without touching and disturbing.The research work indicates that PIV has lots of potential applications in the underwater flow field measurement.
A display and analysis system for hermetical flow field in water tunnel is developed based on the particle image velocimetry（PIV） technology. It consists of some subsystems, such as lamp-house, imaging, image processing and analyzing, control and particles putting. Taking the flow fields around a sphere and a cylinder model as an example under higher Renolds number 5.8 × 10^5 in water tunnel, we inquired into the application of the system to water tunnel experiment by cross correlation algorithm. The measure error is less than 2 %. The test results show that the developed system can measure and display the flow field accurately in complex flow field without touching and disturbing. The research work indicates that PIV has lots of potential applications in the underwater flow field measurement.
基金
Sponsored by National Nature Science Foundation of China(10672136)
关键词
PIV技术
流体力学
水通道
交叉相关性
hydromechanics, PIV, water tunnel, flow field, cross correlation
