Abstract

A new method was presented to measure flowing parameters in two-phase flow. The flowing images were captured by a CCD camera. An image-subtracted algorithm was used to remove the background noise, an iteration algorithm was used to calculate the optimizing threshold, and some morphological functions were applied to modify bubbles shape. The method can measure the bubbles area, perimeter, diameter, gas area fraction and bubbles velocity in gas-liquid two-phase bubbly flow.

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