CFD analysis of several design parameters affecting the performance of the Maxblend impeller |
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| Authors: | C Devals M Heniche K Takenaka PA Tanguy |
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| Affiliation: | 1. URPEI, Department of Chemical Engineering, Ecole Polytechnique, Montreal, Canada;2. SHI Mechanical & Equipment Inc., Saijo City, Ehime, Japan;1. Laboratoire de Mécanique Appliquée, Faculté de Génie Mécanique, USTO-MB, Oran, Algérie;2. Institut de Technologie, Université Ibn Khaldoun, Tiaret, Algérie;3. INSA de Strasbourg-24 Bd de la Victoire-67084 Strasbourg-France;1. Assistant Professor, Department of Mechanical Engg. M.J. College of Engineering & Technology;2. Assistant Professor, Department of Mechanical Engg. M.J. College of Engineering & Technology;3. Senior Assistant Professor, Department of Mechanical Engg. M.J. College of Engineering & Technology;4. Senior Assistant professor, Mechanical engineering department, M.J College of engineering and technology;1. Department of Chemical Engineering, Ryerson University, 350 Victoria Street, Toronto, M5B 2K3, Canada;2. Department of Chemical Engineering, Lakehead University, 955 Oliver Road, Thunder Bay, P7B5E1, Canada;1. Aerospace Department, Military Technical College, Cairo, Egypt;2. Mechanical Power and Energy, Military Technical College, Cairo, Egypt |
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| Abstract: | A CFD characterization of the hydrodynamics of the Maxblend impeller with experimental validations has been carried out with viscous Newtonian and non-Newtonian inelastic fluids. The mixing cases investigated were the non-baffled configuration with Newtonian and shear-thinning fluids, and the baffled configuration with only Newtonian fluids. The study focused on the effect of the impeller bottom clearance and the Reynolds number on the power characteristics, the distribution of shear rates and the overall flow conditions in the vessel. It was found that the bottom clearance plays a significant role on the power consumption, and that the value of the Reynolds number and the power law index strongly affect the axial pumping efficiency and the shear rate profile. The best performance was obtained when the impeller Reynolds number is superior to 10. |
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