On the trailing vortices around hydrofoil impeller blades

Chemical Engineering Research and Design

Volumn 77, Issue 8, 1999, Pages 731-740

  Fentiman, N J ^a   Lee, K C ^a   Paul, G R ^a   Yianneskis, M ^a  

^a KING'S COLLEGE LONDON   (United Kingdom)

Author keywords

Hydrofoil; LDA; Profiled blade impeller; Stirred vessel; Trailing vortices; Turbulence

Indexed keywords

ANEMOMETERS; AXIAL FLOW; LASER DOPPLER VELOCIMETERS; ROTORS; TURBOMACHINE BLADES;

LASER DOPPLER ANEMOMETRY; STIRRED VESSELS;

VORTEX FLOW;

BLADE; HYDROFOIL; IMPELLER; TURBULENCE;

EID: 0033509371     PISSN: 02638762     EISSN: None     Source Type: Journal    
DOI: 10.1205/026387699526700     Document Type: Article

References (27)

1. Bakker, A. and van den Akker, H. E. A., 1990, The use of profiled axial flow impellers in gas-liquid reactors, Proc Fluid Mining 4, IChemE Symp Series No. 121, pp. 153-166.
2. Ibrahim, S. B., Nienow, A. W. and Chatwin, S., 1992, Solid suspension studies with traditional and novel impellers, Proc 1992 IChemE Research Event, 9-10 January, pp. 122-124.
3. Reuss, M., 1988, Influence of mechanical stress in the growth of Rhizopus nigrificans in stirred bioreactors, Chem Eng Technol, 11: 178-187.
4. Fentiman, N. J., St. Hill, N., Lee, K. C., Paul, G. R. and Yianneskis, M., 1998, A novel profiled blade impeller for the homogenization of miscible fluids in stirred vessels, Trans. IChemE. Part A., 76: 835-842.
5. Myers, K., Reeder, M. F., Bakker, A. and Dickey, D. S., 1997, Récents Progrès en Génie des Procédés, 11: 115-122.
6. Fasano, J. B., Bakker, A. and Penney, W. R., 1994, Advanced impeller geometry boosts liquid agitation. Chemical Engineering, August 1994.
7. Buurman, C., Resoort, G. and Plaschkes, A., 1985, Scaling-up rules for solids suspension in stirred vessels, Proc 5th Europ Conf on Mixing, Wurzburg, Germany, pp. 15-26.
8. Bujalski, W., Nienow, A. W., Chatwin, S. and Cook, M., 1986, The dependency on the scale and material thickness of power numbers of different impeller types, Proc Int Conf on Mechanical Agitation, Toulouse, pp. 1.37-1.46, (ENS Ass of Chem Eup).
9. Rutherford, K., Mahmoudi, S. M. S., Lee, K. C. and Yianneskis, M., 1996, The influence of rushton impeller blade and disk thickness on the mixing characteristics of stirred vessels. Tram IChemE Part A. 74: 369-378.
10. Ali, A. M., Yuan, H. H. S., Dickey, D.S. and Tatterson, G.B. 1981, Liquid dispersion mechanisms in agitated tanks: Part I. Pitched blade turbine, Chem Eng Commun, 10: 205-215.
11. Van't Riet K., Bruijn, W. and Smith, J. M., 1976. Real and pseudoturbulence in the discharge stream from a Rushton turbine, Chem Eng Sci, 31: 407.
12. Yianneskis, M., Popiolek, Z. and Whitelaw, J. H., 1987, An experimental study of the steady and unsteady flow characteristics of stirred reactors, J Fluid Mech, 175: 537-555.
13. Yianneskis, M. and Whitelaw, J. H., 1993, On the structure of the trailing vortices around Rushton turbine blades. Trans IChemE Part A, 71: 543-550.
14. Kresta, S. M. and Wood, P. E., 1993, The flow field produced by a pitched blade turbine: characterisation of the turbulence and estimation of dissipation rate, Chem Eng Sci, 48: 1761-1774.
15. Schäfer, M., Yianneskis, M., Wächter, P. and Durst, F., 1998, Trailing vortices around a 45° pitched blade impeller. AIChE J, 44: 1233-1246.
16. Jaworski, Z. and Nienow, A. W., 1994, LDA measurements of flow fields with hydrofoil impellers in fluids with different rheological properties, Proc Eighth Europ Conf on Mixing, IChemE Symp Series No. 136, 105-112.
17. Jaworski, Z., Nienow, A. W. and Oyster, K. N., 1996, An LDA study of the turbulent flow field in a baffled vessel agitated by an axial, down-pumping hydrofoil impeller, Can J Chem Eng, 74: 3-15.
18. Nouri, M. and Whitelaw J,. H., 1990, Effect of size and confinement on the flow characteristics in stirred reactors, Proc 5th Int Symp on Applications of Laser Techniques to Fluid Mechanics, Lisbon, Portugal, Paper 23.2.
19. Tennekes, H. and Lumley, J. L., 1972, A First Course in Turbulence, (The MIT Press, Cambridge, Mass).
20. Press, W. H., Teukolsky, S. A., Vetterling, W. T. and Flannery, B. P., 1992, Numerical Recipes in Fortran, (Cambridge University Press, Cambridge).
21. Durao, D. F. G. and Whitelaw, J. H., 1978, Velocity characteristics of the flow in the near wake of a disk, J Fluid Mechanics, 85 (2): 369-385.
22. Balabani, S. and Yianneskis, M., 1996, An experimental study of the mean flow and turbulent structure of cross-flow over tube bundles, Proc IMechE, J Mech Eng Sci, 210 (C): 317-331.
23. Plion, P., Costes, J. and Couderc, J. P., 1985, Study by laser Doppler anemometry of the flow induced by a propeller in a stirred tank - influence of baffles, Proc 5th Europ Conf on Mixing, Wurzburg, Germany, pp. 341-353.
24. Ranade, V. V., Mishra, V. P., Saraph, V. S., Deshpande, G. B. and Joshi, J. B., 1992, Comparison of axial flow impellers using a laser Doppler anemometer, Ind Eng Chem Res, 31: 2370-2379.
25. Lee, K. C. and Yianneskis, M., 1998, Turbulence properties of the impeller stream of a Rushton turbine, AIChEJ, 44: 13-24.
26. Derksen, J. J., Doelman, M. S. and van den Akker, H. E., 1998, Phase-resolved three-dimensional LDA measurements in the impeller region of a turbulently stirred tank, Proc 9th Int Symp on Applications of Laser Techniques to Fluid Mechanics, Lisbon, Portugal, 13-16 July, pp. 14.5.1-14.5.7.
27. Kresta, S., 1998, Turbulence in stirred tanks: anisotropic, approximate and applied. Can J Chem Eng, 76: 563-576.