Power and Mean Flow Characteristics in Mixing Vessels Agitated by Hyperboloid Stirrers

Canadian Journal of Chemical Engineering

Volumn 75, Issue 5, 1997, Pages 832-842

  Pinho, F T ^a   Piqueiro, F M ^b   Proenca M F ^b   Santos, A M ^c  

^a Niversidade do Porto   (Portugal)

^b Departamento de Engenharia Civil   (Portugal)

^c UNIVERSITY OF PORTO   (Portugal)

Author keywords

Hyperboloid impeller; Power consumption; Stirred tank

Indexed keywords

ENERGY DISSIPATION; MIXING; REYNOLDS NUMBER; SHEAR FLOW;

HYPERBOLOID STIRRERS; NEWTON NUMBER; STIRRED TANKS;

FLUID DYNAMICS;

EID: 0031249941     PISSN: 00084034     EISSN: None     Source Type: Journal    
DOI: 10.1002/cjce.5450750503     Document Type: Article

References (29)

1. Bakker, A. and H. E. A. van den Akker "The use of profiled axial flow impellers in gas - liquid reactors", in "Proc. Fluid Mixing IV", Inst. Chem. Eng. Symp. Series No. 121 (1990), pp. 153-160.
2. Buckland, B. C., K. Gbewonyo, D. DiMasi, G. Hunt, G. Westerfield and A. W. Nienow "Improved performance in viscous mycelial fermentation by agitator retrofitting" Biotechnol. Bioeng. 31, 737-742 (1988).
3. nd edition, Academic Press (1981).
4. Hockey, R. M. Turbulent Newtonian and Non-Newtonian Flows in a Stirred Reactor. PhD Thesis, University of London, London (1990).
5. Höfken, M., F. Bischof and F. Durst, Novel Hyperboloid Stirring and Aeration System for Biological and Chemical Reactors. ASME FED-Industrial Applications of Fluid Mechanics 132, 47 (1991).
6. Höfken, M. and F. Bischof "Hyperboloid stirring and aeration system: operating principles, application, technical description." Invent GmbH report, version 1.1, Erlangen (1993).
7. Höfken, M., K. Zähringer and F. Bischof, "Stirring and Aeration System for the Upgrading of Small Waste Water Treatment Plants", Wat. Sci. Tech. 29, 149 (1994 a).
8. Höfken, M., F. Bischof, K. Zähringer and F. Durst "Submersed Mechanical Aeration System for Activated Sludge Tanks." ASME FED- Aeration Technology, R. E. A. Arndt and A. Prosperetti, Editors 187, 47 (1994 b).
9. Jaworski, Z., A. W. Nienow and K. N. Dyster "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 (1996).
10. Joosten, G. E. H., J. G. M. Schilder, and A. M. Broere "The Suspension of Floating Solids in Stirred Vessels" Trans. J. Chem. Eng. 55, 220 (1977).
11. Kunte, S., M. Höfken and T. Valente "The design, Construction, Assembly and Test of an Experimental Facility for Mixing Experiments" Joule project CT 92-0127 report, Lehrstuhl für Strömungsmechanik, Universität Erlangen- Nürnberg, FRG and Laboratório de Hidráulica, Recursos Hidricos e Ambiente, Faculdade de Engenharia da Universidade do Porto, Portugal (1994).
12. Kusters, K. A. "The Influence of Turbulence on Aggregation of Small Particles in Agitated Vessels" PhD Thesis. Technical University of Eindhoven (1991).
13. Nagata, S. "Mixing: Principles and Applications" John Wiley & Sons., New York (1975).
14. Nouri, J. M. "Single and Two-Phase Flows in Ducts and Stirred Reactors" PhD Thesis. University of London, London (1988).
15. th Int. Symp. on Applications of Laser Techniques to Fluid Mechanics, paper 23.2, Lisbon, Portugal, 9-12 July (1990).
16. Nouri, J. M. and J. H. Whitelaw "Particle Velocity Characteristics of Dilute to Moderately Dense Suspension Flows in Stirred Reactors", Int. J. Multiphase Flow 18, 21 (1992).
17. Nouri, J. M. and J. H. Whitelaw "Flow Characteristics of Hyperboloid Stirrers" Can. J. Chem. Eng. 72, 782 (1994).
18. Oldshue, J. Y. "Fluid Mixing Technology", McGraw-Hill, New York (1983).
19. Pereira, A. S. and F. T. Pinho "Turbulent Pipe Flow Characteristics of Low Molecular Weight Polymer Solutions. J. Non-Newt. Fluid Mech. 55, 321 (1994).
20. Piqueiro, F. T. "Analysis of the flow field and mixing efficiency of the flow induced by turbine agitators", Department of Civil Engineering, Faculty of Engineering, Porto, Portugal, PhD Thesis in preparation (1997).
21. Piqueiro, F. M., J. T. Valente, F. T. Pinho "Power consumption and flow pattern of the mixing vessel flow with single and double hyperboloid stirrers" Internal report of the Departments of Civil and Mechanical Engineering, Faculty of Engineering, Porto, Portugal (1995).
22. Piqueiro, F. M., M. F. Proença, F. T. Pinho and A. M. Santos "Mean and turbulent flow characteristics of single hyperboloid impeller stirred vessels" Proceedings of the Eight International Symposium on Applications of Laser Techniques to Fluid Mechanics, 7-11 July, paper 8.3 (1996).
23. Popiolek, Z., M. Yianneskis and J. H. Whitelaw "An Experimental Study of Steady and Unsteady Flow Characteristics of Stirred Reactors", J. Fluid Mech. 175, 537 (1987).
24. nd Euro. Conf. Mixing, Paper B1, Cambridge, UK, March 30-April 1 (1977).
25. Rutherford, K., S. M. S. Mahmoudi, K. C. Lee and M. Yianneskis "Hydrodynamic characteristics of dual Rushton impeller stirred vessels", AIChEJ 42, 332 (1996 a).
26. Rutherford, K., S. M. S. Mahmoudi, K. C. Lee and M. Yianneskis "The influence of Rushton impeller blade and disc thickness on the mixing characteristics of stirred vessels", Trans. Inst. Chem. Eng., 74, 369 (1996 b).
27. Skelland, A. H. P. "Non-Newtonian Flow and Heat Transfer", John Wiley & Sons, New York (1967).
28. Skelland, A. H. P. "Mixing and Agitation of non-Newtonian fluids" in Handbook of Fluids in Motion, (Eds. N. P. Cheremisinoff and R. Gupta), Ann Arbor Science Publishers, Ann Arbor (1983).
29. Ulbrecht, J. J. and G. K. Patterson (Editors) "Mixing of Liquids by Mechanical Agitation" Chemical Engineering Series: Concepts and Reviews, Volume 1, Gordon and Breach Science Publishers, London (1985).