3D-PTV Measurement of Bubbly Flows in a Micro-channel Using X-ray Stereo-Imaging Technique

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Multiphase flows in a micro-channel have been interested with relation to application of heat transfer, chemical reaction and mixing. In the case of gas-liquid multiphase flow, most researches are associated with slug flows. And study on dispersed bubble flow is scarcely found. Experimental study of the micro-scale flows is not easy, and 3D measurement of such flows is further difficult. In this study, in order to investigate such flows, a new experimental technique has been developed and applied to the micro-scale bubbly flows.