摘要
空化中空泡群的速度计算具有显著的理论和应用意义。本文基于试验方法,在自行搭建的试验台上利用高速观察摄影设备获得空泡群平移运动的连续图像记录后,利用PIV(Particle Image Velocitry)中相关性的原理,对空泡群的平移运动进行了分析,得到了换能器中心轴线上空泡运动初步的量化值。在此基础上,对空泡受到声辐射压力作用下的加速运动进行了理论推导,很好地解释了计算中得到的速度结果。
The cavitation bubble cluster＇s velocity calculation has obvious theoretical and applied significance. Series of continuous images of cavitation bubble cluster are captured by the high speed imaging devices on self-designed test-bed. Velocity measurements were obtained using the correlation theory of particle image velocimetry. Quantized velocity of bubble cluster on the center axis is investigated. Combined the theoretical derivation of bubble translational movement under acoustic radiation pressure, the experimental results are explained.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2010年第7期1139-1142,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.10532010)
关键词
空化泡群
声辐射压力
速度分布
相关性
cavitation bubble cluster
acoustic radiation pressure
velocity distribution
correlation
