Study on bubble formation in non-Newtonian fluids by laser image technique |
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Authors: | Wenyuan Fan Shaokun Jiang Chunying Zhu Youguang Ma Huaizhi Li |
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Affiliation: | aState Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;bLaboratoire des Sciences du Génie Chimique, CNRS-ENSIC-INPL, 1 rue Grandville, BP 451, 54001 Nancy Cedex, France |
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Abstract: | A laser image system for studying bubble formation at the orifice submerged in liquid was established. The process of bubble formation can be directly visualized and real-time recorded through computer by means of He–Ne laser as light source using the beam expanding and light amplification technique. The behaviors of bubble formation in polyacrylamide (PAM) aqueous solutions were investigated at temperature 293.15 K and orifice diameters 1, 1.5 and 2 mm, respectively, the chamber volume was 90 cm3 and the gas flowrate from 0.1 to 0.6 cm3/s. The influences of mass concentration of solution and orifice diameter on bubble detachment volume were investigated experimentally and the results show that bubble detachment volume increases with solution concentration and orifice diameter in the experimental range of this work. |
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Keywords: | Bubble formation Non-Newtonian fluid Orifice diameter |
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