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For multi-phase flow in pipelines, the distributions of the individual phases are of significant importance. For this reason a low-energy gamma-ray tomography system has been designed. The set-up uses a 241Am source along with a CdZnTe array to acquire gamma ray attenuation data in different positions of a cross-section plane around a test pipe. A charge sensitive amplifier (CSA) and a fourth-order...
A phase doppler anemometer (PDA) was used to measure axial components of mean and fluctuation velocities of air and particles in a pipe of 80 mm inside diameter. Glass beads having mean diameter of 55 and 468μm, respectively, were used, the density being 2590kg/m 3 . The fine particles suppress the air flow turbulence while the coarse ones increase it. Mixing fine particles with coarse ones...
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