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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2840
Title: Hydrodynamics and mixing characterization in a novel high shear mixer
Authors: Vikash
Deshawar D.
Kumar V.
Published in: Chemical Engineering and Processing: Process Intensification
Abstract: In the present study hydrodynamics and mixing characteristics in a novel batch rotor-stator mixer (RSM), which is very simple in construction and design, is investigated at different rotor speeds (2000, 4000 and 6000 rpm). The proposed RSM design is comprised of tilted jets/holes in the stator, for the deep penetration in the mixing vessel. For the optimization of operating as well as geometrical parameters of the proposed mixer design, simulations are carried out using transient sliding mesh with k-? turbulence model at different rotor speeds. It was observed that besides radial and tangential flows jets emerging from stator holes impinge the bulk fluid above and below the stator, which improves mixing and reduces dead zones. Further, the flow parameters such as mass flow rate, Power number, Flow number, pumping efficiency and energy dissipation rate increased with an increase in rotor speed. Further, the energy dissipation rate is found maximum in the rotor swept region. It is observed that the amplitude fluctuations in flowrate and torque, with blade position, increased with the rotor speed. Further, mixing characterization in the novel RSM is studied for the first time in a batch RSM to predict the dead zones in the RSM. © 2017 Elsevier B.V.
Citation: Chemical Engineering and Processing: Process Intensification (2017), 120(): 57-67
URI: https://doi.org/10.1016/j.cep.2017.06.008
http://repository.iitr.ac.in/handle/123456789/2840
Issue Date: 2017
Publisher: Elsevier B.V.
Keywords: Computational fluid dynamics
High shear mixing
k-? turbulence modeling
Process intensification
Rotor-stator mixer
ISSN: 2552701
Author Scopus IDs: 57194580056
57195976645
7404634425
Author Affiliations: Vikash, Department of Chemical Engineering, Indian Institute of Technology RoorkeeUttarakhand 247667, India
Deshawar, D., Department of Chemical Engineering, Indian Institute of Technology RoorkeeUttarakhand 247667, India
Kumar, V., Department of Chemical Engineering, Indian Institute of Technology RoorkeeUttarakhand 247667, India
Funding Details: One of the authors (Vikash) gratefully acknowledges the financial support of the Ministry of Human Resource Development (MHRD), Government of India in the form of a research fellowship.
Corresponding Author: Kumar, V.; Department of Chemical Engineering, Indian Institute of Technology RoorkeeIndia; email: vksinfch@iitr.ac.in
Appears in Collections:Journal Publications [CH]

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