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In this study, the flow characteristics of an aqueous foam have been studied through a horizontal sudden expansion localized in the middle of a horizontal duct. With a square section 21×21mm 2 in the upstream and a rectangular section 21×42mm 2 in the downstream, this singularity has an aspect ratio of 0.5. Through this sudden expansion, the experimental study consists in determining,...
We investigate the flow characteristics of an aqueous foam in a horizontal duct of square section, in presence of a fence. This experimental study consists in determining the frictional pressure loss, the dynamics of the wet foam flow by PIV, the static drainage and the thickness of the underlying liquid film in the vicinity of the singularity. Near this latter, the singular pressure loss is deduced...
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