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Received April 21, 2013
Accepted February 27, 2014
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Experimental investigation of mixing in a novel continuous chaotic mixer
1CFD and CAE Laboratory, Department of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran 2Institute of Chemical Technology, Mumbai, India 3Chemical & Biomolecular Engineering Department, Hong Kong University of Science & Technology, Hong Kong
Alipour@iust.ac.ir
Korean Journal of Chemical Engineering, October 2014, 31(10), 1757-1765(9), 10.1007/s11814-014-0071-x
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Abstract
This paper presents and discusses results of an experimental study of laminar mixing of a highly viscous fluid (dough) in a continuous chaotic mixer. The mixer consists of an eccentric rotor that rotates co-axially within a stator, which results in chaotic advection. A dye injection technique was used to measure the mixing performance of the mixer. A mixing index was defined and computed by image processing of photographs of the exiting fluid from the mixer. Mixing characteristics were determined for constant as well as stepwise rotation of the rotor. Results revealed that mixing performance improves with increase in the rotational speed for constant rotational speed. The stepwise rotation case displayed better mixing performance than the constant speed case for stepwise changes of the amplitude as well as frequency of rotation.
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Kumar S, Homsy GM, Phys. Fluids, 8, 1774 (1996)
Lefevre A, Mota JPB, Rodrigo AJS, Saatdjian E, Int. J. Heat Fluid Flow, 24, 310 (2003)
Liu RH, Stremler MA, Sharp KV, Olsen MG, Santiago JG, Adrian RJ, Aref H, Beebe DJ, J. Microelectromech. Syst., 9, 1059 (2000)
Chien WL, Rising H, Ottino JM, J. Fluid Mech., 170, 355 (1986)
Miles KC, Nagarajan B, Zumbrunen DA, J. Fluids Eng., 117, 582 (1995)
Jana SC, Tjahjadi M, Ottino JM, AIChE J., 40(11), 1769 (1994)
Swanson PD, Ottino JM, J. Fluid Mech., 213, 227 (1990)
Niederkorn TC, Ottino JM, J. Fluid Mech., 256, 243 (1993)
Atobe1 T, Funakoshi M, Inoue S, Fluid Dynamics Research, 16, 115 (1995)
Acharya N, Sen M, Chang H, Int. J. Heat Mass Transfer, 35, 2475 (1992)
Mokrani A, Castelain C, Peerhossaini H, Int. J. Heat Mass Transf., 40(13), 3089 (1997)
Chagny C, Castelain C, Peerhossaini H, Appl. Therm. Eng., 20, 1615 (2000)
Clifford MJ, Cox SM, Finn MD, Chem. Eng. Sci., 59(16), 3371 (2004)
Peerhossaini H, Castelain C, Le Guer Y, Exp. Therm. Fluid Sci., 7(4), 333 (1993)
Castelain C, Mokrani A, Guer Y, Peerhossaini H, The European Journal of Mechanics-B/Fluids, 20, 205 (2001)
Fountain TCGO, Khakhar DV, Mezic I, Ottino JM, Chem. Eng. Sci., 417, 265 (2000)
Lamberto DJ, Alvarez MM, Muzzio FJ, Chem. Eng. Sci., 56(16), 4887 (2001)
Metcalfe G, Lester D, J. Food Eng., 95(1), 21 (2009)
Chaiken J, Chevray R, Tabor M, Tan Q, Proc. R. Soc. Lond. A, 408, 165 (1986)
Chaiken J, Chu CK, Tabor M, Tan QM, Phys. Fluids, 30, 687 (1987)
Aref H, Balachandar S, Phys. Fluids, 29, 3515 (1986)
Niederkorn TC, Ottino JM, AIChE J., 40(11), 1782 (1994)
Hosseinalipour SM, Tohidi A, Shokrpour M, Nouri NM, J. Mech. Sci. Technol., 27, 329 (2013)
Binding DM, Couch MA, Sujatha KS, Webster MF, J. Food Eng., 58(2), 111 (2003)
Sujatha KS, Webster MF, Binding DM, Couch MA, J. Food Eng., 57(1), 67 (2003)
Dhanasekharan KM, Kokini JL, J. Food Eng., 60(4), 421 (2003)
Cullen PJ, Food mixing: Principles and applications, Wiley-Black-well (2009)
Paul EL, Atiemo-Obeng V, Kresta SM, Handbook of industrial mixing: Science and practice, Wiley-Interscience (2003)
