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A novel method is developed for in-line measurements of particle size, velocity and concentration in a dilute, particulate two-phase flow based on trajectory image processing. The measurement system consists of a common industrial CCD camera, an inexpensive LED light and a telecentric lens. In this work, the image pre-processing steps include stitching, illumination correction, binarization, denoising,...
A system based on trajectory image processing is developed to achieve in situ measurement of particle size, concentration and velocity in dilute gas-liquid two-phase flow, which is hard to be measured by laser particle analyzer. As the single-frame single-exposure image method, velocities of droplets can be easily calculated from the certain exposure time and the moving distance in a trajectory image,...
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