提出了一种在高空隙率下气液两相流中气泡速度场的图像分析方法.该方法基于应用多重空间分辨率,也就是回归相关PIV法(RCC-PIV)计算气液两相流中气泡的速度.通过比较一些PTV和PIV的算法,回归相关能得到最好的关于气泡光学和动力学特性的测定结果,肯定了本算法的适用性.研究结果表明,气泡速度高频率的振动发生在剪切层和上表面附近,而低频振动在实验装置的中部占优.
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