Turbulence characteristics in turbine-agitated tanks of different sizes and geometries

Chemical Engineering Journal

Volumn 72, Issue 2, 1999, Pages 97-107

  Ståhl Wernersson, Eva ^a   Trägårdh, Christian ^a  

^a LUND UNIVERSITY   (Sweden)

Author keywords

Anemometry measurements; Geometry; Turbulent kinetic energy

Indexed keywords

ANEMOMETERS; ENERGY DISSIPATION; KINETIC ENERGY; MIXING; ROTORS; TANKS (CONTAINERS); TURBINES; TURBULENCE; TURBULENT FLOW; VELOCITY MEASUREMENT;

ANEMOMETRY; RUSHTON TURBINES;

CHEMICAL REACTORS;

ANEMOMETER; GEOMETRICAL EFFECT; IMPELLER; STIRRED TANK; TURBULENCE; VELOCITY MEASUREMENT;

EID: 0033535001     PISSN: 13858947     EISSN: None     Source Type: Journal    
DOI: 10.1016/S1385-8947(98)00147-8     Document Type: Article

References (29)

1. Cutter L.A. Flow and turbulence in a stirred tank. AIChE J. 12:1966;35-45.
2. Rao M.A., Brodkey R.S. Continuous flow stirred tank turbulence parameters in the impeller stream. Chem. Eng. Sci. 27:1972;137-156.
3. Komasawa I., Kuboi R., Otake T. Fluid and particle motion in turbulent dispersion-I. Measurement of turbulence of liquid by continual pursuit of tracer particle motion. Chem. Eng. Sci. 29:1974;641-650.
4. Yuu S., Oda T. Measurement of turbulence parameters in a non-baffled stirred tank with high rotation speeds. Chem. Eng. J. 20:1980;35-42.
5. H.D. Laufhütte, A. Mersmann, Dissipation of power in stirred vessels, Paper no. 33, 5th Eur. Conf. on Mixing, Würtzburg, 1985, 331-340.
6. Mahoust M., Cognet G., David R. Two component LDV measurements in a stirred tank. AIChE J. 35:1989;1770-1778.
7. Wu H., Patterson G.K. Laser Doppler measurements of turbulent flow parameters in a stirred mixer. Chem. Eng. Sci. 44(1989):1989;2207-2221.
8. Stoots C.M., Calabrese R.V. Mean velocity field relative to a Rushton turbine blade. AIChE J. 41:1995;1-11.
9. Rutherford K., Lee K.C., Mahmoudi S.M.S., Yianneskis M. Hydrodynamic characteristics of dual Rushton impeller stirred vessels. AIChE J. 42:1996;332-346.
10. Ito S., Ogawa K., Yoshida N. Turbulence in impeller stream in a stirred vessel. J. Chem. Eng. Japan. 8:1975;206-209.
11. Costes J., Couderc J.P. Study by laser doppler anemometry of the turbulent flow induced by a Rushton turbine in a stirred tank: Influence of the size of the units I. Mean flow and turbulence. Chem. Eng. Sci. 43:1988;2751-2764.
12. Ståhl Wernersson E., Trägårdh Ch. Scaling of turbulence characteristics in a turbine-agitated tank in relation to agitator rate. Chem. Eng. J. 70:1998;37-45.
13. Nishikawa M., Okamoto Y., Hashimato K., Nagata S. Turbulence energy spectra in baffled mixing vessels. J. Chem. Eng. Japan. 9:1976;489-494.
14. Van der Molen K., van Maanen H.R.E. Laser-Doppler measurements of the turbulent flow in stirred vessels to establish scaling rules. Chem. Eng. Sci. 33:1978;1161-1168.
15. Ogawe K., Kuroda C., Yoshikawa S. An expression of energy spectrum function for wide wavenumber ranges. J. Chem. Eng. Japan. 18:1985;544-549.
16. Ogawe K., Kuroda C., Yoshikawa S. A method of scaling up equipment from the viewpoint of energy spectrum function. J. Chem. Eng. Japan. 19:1986;345-347.
17. K. Ogawe, C. Kuroda, A new scale-up rule and evaluation of traditional rules from a viewpoint of energy spectrum function, in: G.B. Tatterson (Ed.), AIChE Symposium Series, Industrial Mixing Fundamentals with Application, no. 305, 1995, 95-101.
18. D.E. Leng, Succeed at Scale Up, Chem. Eng. Progress, June 1991, pp. 23-31.
19. E. Ståhl Wernersson, Ch. Trägårdh, Measuring and analysis of high-intensity turbulent characteristics in a turbine-agitated tank, to be published in Experiments in Fluids, (1998).
20. Grant H.L., Stewart R.W., Moilliet A. J. Fluid Mech. 12:1962;241-263.
21. Lawn C.J. The determination of the rate of dissipation in turbulent pipe flow. J. Fluid Mech. 48:1971;477-505.
22. W.H. Press, S.A. Teukolsky, W.T. Vetterling, B.P. Flannery, Numerical Recipes in Fortran, 2nd ed., Cambridge, 1992.
23. J. Hintze, Turbulence, 2nd ed., McGraw Hill, New York, 1975.
24. Laufhütte H.D., Mersmann A. Local energy dissipation in agitated turbulent fluids and its significance for the design of stirring equipment. Chem. Eng. Technol. 10:1987;56-63.
25. Heskestad G. A generalized Taylor hypothesis with application for high Reynolds number turbulent shear flows. J. Appl. Mech. 32:1965;735-739.
26. Okamoto Y., Nishikawa M., Hashimoto K. Energy dissipation rated distribution in mixing vessels and its effects on liquid-liquid dispersion and solid-liquid mass transfer. Int. Chem. Eng. 21:1981;88-94.
27. Chapple D., Kresta S. The effect of geometry on the stability of flow patterns in stirred tanks. Chem. Eng. Sci. 49:1994;3651-3660.
28. Zhou G., Kresta S.M. Distribution of energy between convective and turbulent flow for three frequently used impellers. Trans. IChemE, Part A. 74:1996;379-389.
29. Zhou G., Kresta S.M. Impact of tank geometry on the maximum turbulence energy dissipation rate for impellers. AIChE J. 42:1996;2476-2490.