Turbulent and laminar mixings in an unbaffled agitated vessel with an unsteadily angularly oscillating impeller

Industrial and Engineering Chemistry Research

Volumn 48, Issue 3, 2009, Pages 1665-1672

  Yoshida, Masanori ^a   Nagai, Yasuyuki ^a   Yamagiwa, Kazuaki ^a   Ohkawa, Akira ^a   Tezura, Shuichi ^b  

^a NIIGATA UNIVERSITY   (Japan)

^b Shimazaki Mixing Equipment Co Ltd   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

FLUID DYNAMICS; LAMINAR FLOW; ROTATION;

ANGULAR OSCILLATIONS; LAMINAR FLOW REGIONS; MIXING CHARACTERISTICS; POWER CHARACTERISTICS; TURBINE IMPELLERS; UNBAFFLED AGITATED VESSELS; UNIDIRECTIONAL ROTATIONS;

TURBULENCE;

EID: 61549098063     PISSN: 08885885     EISSN: None     Source Type: Journal    
DOI: 10.1021/ie801502q     Document Type: Article

References (32)

1. Tanguy, P. A.; Lacroix, R.; Bertrand, F.; Choplin, L.; Brito de la Fuente, E. Finite element analysis of viscous mixing with a helical ribbonscrew impeller. AIChE J. 1992, 38, 939.
2. Espinosa Solares, T.; Brito de la Fuente, E.; Tecante, A.; Tanguy, P. A. Power consumption of a dual turbine-helical ribbon impeller mixer in ungassed conditions. Chem. Eng. J. 1997, 67, 215.
3. Wang, J. J.; Feng, L. F.; Gu, X. P.; Wang, K.; Hu, C. H. Power consumption of inner-outer helical ribbon impellers in viscous Newtonian and non-Newtonian fluids. Chem. Eng. Sci. 2000, 55, 2339.
4. Tanguy, P. A.; Thibault, F.; Brito de la Fuente, E.; Espinosa Solares, T.; Tecante, A. Mixing performance induced by coaxial flat blade-helical ribbon impellers rotating at different speeds. Chem Eng. Sci. 1997, 52, 1733.
5. Foucault, S.; Ascanio, G.; Tanguy, P. A. Power characteristics in coaxial mixing, Newtonian and non-Newtonian fluids. Ind. Eng. Chem. Res. 2005, 44, 5036.
6. Rivera, C.; Foucault, S.; Heniche, M.; Espinosa Solares, T.; Tanguy, P. A. Mixing analysis in a coaxial mixer. Chem. Eng. Sci. 2006, 61, 2895.
7. Rudolph, L.; Schafer, M.; Atiemo Obeng, V.; Kraume, M. Experimental and numerical analysis of power consumption for mixing of high viscosity fluids with a co-axial mixer. Chem. Eng. Res. Des. 2007, 85, 568.
8. Bonnot, S.; Cabaret, F.; Fradette, L.; Tanguy, P. A. Characterization of mixing patterns in a coaxial mixer. Chem. Eng. Res. Des. 2007, 85, 1129.
9. Yoshida, M.; Hiura, T.; Yamagiwa, K.; Ohkawa, A.; Tezura, S. Liquid flow in impeller region of an unbaffled agitated vessel with an angularly oscillating impeller. Can. J. Chem. Eng. 2008, 86, 160.
10. Lamberto, D. J.; Muzzio, F. J.; Swanson, P. D. Using time-dependent rpm to enhance mixing in stirred vessels. Chem. Eng. Sci. 1996, 51, 733.
11. Nomura, T.; Uchida, T.; Takahashi, K. Enhancement of mixing by unsteady agitation of an impeller in an agitated vessel. J. Chem. Eng. Jpn. 1997, 30, 875.
12. Yao, W. G.; Sato, H.; Takahashi, K.; Koyama, K. Mixing performance experiments in impeller stirred tanks subjected to unsteady rotational speeds. Chem. Eng. Sci. 1998, 53, 3031.
13. Dieulot, J. Y.; Delaplace, G.; Guerin, R.; Brienne, J. P.; Leuliet, J. C. Laminar mixing performances of a stirred tank equipped with helical ribbon agitator subjected to steady and unsteady rotational speed. Chem. Eng. Res. Des. 2002, 80, 335.
14. Ascanio, G.; Foucault, S.; Tanguy, P. A. Time-periodic mixing of shear-thinning fluids. Chem. Eng. Res. Des. 2004, 82, 1199.
15. Chew, C. M.; Ristic, R. I.; Reynolds, G. K.; Ooi, R. C. Characterization of impeller driven and oscillatory mixing by spatial and temporal shear rate distributions. Chem. Eng. Sci. 2004, 59, 1557.
16. Kate, Y.; Tada, Y.; Ban, M.; Nagatsu, Y.; Iwata, S.; Yanagimoto, K. Improvement of mixing efficiencies of conventional impeller with unsteady speed in an impeller revolution. J. Chem. Eng. Jpn. 2005, 38, 688.
17. Yoshida, M.; Ito, A.; Yamagiwa, K.; Ohkawa, A.; Abe, M.; Tezura, S.; Shimazaki, M. Power characteristics of unsteadily forward-reverse rotating impellers in an unbaffled aerated agitated vessel. J. Chem. Technol. Biotechnol. 2001, 76, 383.
18. Yoshida, M.; Shigeyama, M.; Hiura, T.; Yamagiwa, K.; Ohkawa, A.; Tezura, S. Liquid flow in impeller region of an unbaffled agitated vessel with unsteadily forward-reverse rotating impeller. Chem. Eng. Commun. 2007, 194, 1229.
19. Komori, S.; Murakami, Y. Turbulent mixing in baffled stirred tanks with vertical-blade impellers. AIChE J. 1988, 34, 932.
20. Mizushina, T.; Ito, R.; Hiraoka, S.; Murata, T.; Yamanaka, T. Performances of elliptic board and elliptic ribbon agitators. Kagaku Kogaku 1970, 34, 1213.
21. Takao, M.; Horikiri, H.; Wang, K.; Murakami, Y. Experimental verification of equivalence of qualities of mixing for physical mixing to unreacted fraction for instantaneous reaction in stirred tank reactor. Kagaku Kogaku Ronbunshu 1982, 9, 704.
22. Danckwerts, P. V. The definition and measurement of some characteristics of mixtures. Appl. Sci. Res. A 1952, 3, 279.
23. Ni, X.; Gough, P. On the discussion of die dimensionless groups governing oscillatory flow in a baffled tube. Chem. Eng. Sci. 1997, 52, 3209.
24. Nagase, Y.; Sawada, S. An examination of drag theory applied for impellers in relation to conservation of angular momentum. J. Chem. Eng. Jpn. 1997, 10, 229.
25. Takahashi, K.; Arai, K.; Saito, S. Power correlation for anchor and helical ribbon impellers in highly viscous liquids. J. Chem. Eng. Jpn. 1980, 13, 147.
26. Nienow, A. W.; Elson, T. P. Aspect of mixing in Theologically complex fluids. Chem. Eng. Res. Des. 1988, 66, 5.
27. Nagata, S.; Yamamoto, K.; Yokoyama, T.; Shiga, S. Empirical equations for the power requirement of mixing impellers, having a wide range of applicability. Kagaku Kogaku 1957, 21, 708.
28. Okajima, A.; Matsumoto, T.; Kimura, S. Flow characteristics of a rectangular cylinder with a cross-section of various width/height ratios submerged in oscillatory flow. Trans. Jpn. Soc. Mech. Eng., B 1999, 65, 2243.
29. Rice, M.; Hall, J.; Papadakis, G.; Yianneskis, M. Investigation of laminar flow in a stirred vessel at low Reynolds numbers. Chem. Eng. Sci. 2006, 61, 2762.
30. Bouwmans, I.; Bakker, A.; Van den Akker, H. E. A. Blending liquids of differing viscosities and densities in stirred vessels. Chem. Eng. Res. Des. 1997, 75, 777.
31. Dong, L.; Johansen, S. T.; Engh, T. A. Flow induced by an impeller in an unbaffled tank, experimental. Chem. Eng. Sci. 1994, 49, 549.
32. Makino, T.; Ohmura, N.; Kataoka, K. Observation of isolated mixing regions in a stirred vessel. J. Chem. Eng. Jpn. 2001, 34, 574.