Abstract

The authors already developed three-dimensional particle tracking velocimetry (3D-PTV) based on a binary correlation method for high speed particle identification. The technique of the 3D-PTV is applied to the measurement of the flows of water and air bubbles in a cylindrical bath with a bottom blowing air bubbling jet.The performance of the stereo matching and reconstruction for threedimensional particle positions and the measurement accuracy of velocity vectors of water flow are discussed. Besides, the trajectories of air bubbles are investigated and discussed.

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