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Received July 28, 2020
Accepted November 16, 2020
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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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Numerical investigation of the mixing process in a Twin Cam Mixer: Influence of triangular cam height-base ratio and eccentricity
1State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan 430074, China 2School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
zhanxb@hust.edu.cn
Korean Journal of Chemical Engineering, March 2021, 38(3), 552-564(13), 10.1007/s11814-020-0715-y
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Abstract
The twin cam mixer (TCM), as a general-purpose mixer, shares many attributes in common with 3D industrial mixers, like the internal mixer. We investigated the mixing process in a 2D TCM with two identical isosceles triangular cams rotating at 0.5 rpm. A 2D numerical model coupled with the species transport model was employed to study the influence of cam height-base ratio and eccentricity qualitatively and quantitatively, and both were found to have a significant effect on the mixing behavior of the mixer. Furthermore, a dimensionless parameter, named the modified pressurization coefficient, is put forward to quantify the geometry of the mixer. The logarithmic relationship between the modified pressurization coefficient and the mixing quality was discovered and expected to provide new ideas for establishing the relationship between the geometric parameters of a mixer and its mixing performance.
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References
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Carneiro OS, Caldeira G, Covas JA, J. Mater. Process. Technol., 92, 309 (1999)
Zhang XM, Xu ZB, Feng LF, Song XB, Hu GH, Polym. Eng. Sci., 46(4), 510 (2006)
Zhang XM, Feng LF, Hoppe S, Hu GH, Polym. Eng. Sci., 48(1), 19 (2008)
Shearer G, Tzoganakis C, Polym. Eng. Sci., 39(9), 1584 (1999)
Shearer G, Tzoganakis C, Polym. Eng. Sci., 40(5), 1095 (2000)
Shearer G, Tzoganakis C, Adv. Polym. Technol., 20(3), 169 (2001)
Shearer G, Tzoganahis C, Polym. Eng. Sci., 41(12), 2206 (2001)
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Mansour M, Liu Z, Janiga G, Nigam KDP, Sundmacher K, Thevenin D, Zahringer K, Chem. Eng. Sci., 172, 250 (2017)
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Connelly RK, Kokini JL, J. Non-Newton. Fluid Mech., 123(1), 1 (2004)
Connelly RK, Kokini JL, J. Food Eng., 79(3), 956 (2007)
He Q, Huang J, Shi X, Wang X, Bi C, Comput. Math. Appl., 73, 109 (2017)
Cheng J, Manas-Zloczower I, Polym. Eng. Sci., 29, 701 (1989)
Bird RB, Armstrong RC, Hassager O, Dynamics of polymeric liquids, Wiley, New York (1987).
Dhakal P, Das SR, Poudyal H, Chandy AJ, J. Appl. Polym. Sci., 134, 44250 (2017)
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Smale S, B. Am. Math. Soc., 73, 747 (1967)
Manas-Zloczower I, Tadmor Z, Mixing and compounding-theory and practice, Hanser, Cincinnati (2009).
