高含水流体中のキャビテーション***ージョン

概要

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Cavitation erosion is studied for oil in water emulsions, aqueous solutions of surfactants and polymers, and polymer-added emulsions. A magnetostrictive vibrator with an open beaker is used as the test apparatus. Weight loss of an aluminium alloy specimen is measured after exposure to cavitation. The surface of the test specimen after exposure to cavitation is observed with SEM. Cavitation erosion characteristics of high-water-content fluids depend strongly on the constituent materials. Emulsified liquid paraffin with higher density suppresses cavitation erosion more effectively, and no saturation is observed up to 11 percent volumetric density. Polymer solutions can suppress erosion when the molecular weight of the polymer exceeds a certain value. Erosion suppression of mixtures of emulsion and polymer solution becomes lower or higher than those of the original constituents. The apperance of the eroded surface also varies widely with the fluids.
一般社団法人日本機械学会の論文
1994-08-25