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Electrodiffusional flow diagnostics in a centrifugal pump

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Abstract

This paper presents electrodiffusional measurements of the wall shear rate at the impeller surface of a radial centrifugal pump. Twelve probes of different radii and at different positions along one blade were used in a pump with an open six bladed impeller. By means of throttling and speed control the operating point of the pump was adjusted and the influence on the wall shear rate was studied. The measurements were related to the analytical solution for a free rotating disc and the shear gradients were in the same order of magnitude.

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References

  1. M. Lutz, V. Denk and A. Delgado, ‘LDA-investigations on turbulent shear stress in a full scale centrifugal pump’. Proceedings of the 8th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon (1996), pp. 8.1.1–8.1.6.

  2. V. Sobolík, J. Tihon, O. Wein and K. Wichterle, ‘Calibration of electrodiffusion friction probes using a voltage-step transient’. Proceedings of the 4th European Symposium on Electrochemical Engineering, Prague (1996).

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  4. H. Schlichting, ‘Grenzschicht-Theorie’, Karlsruhe (1982).

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Authors and Affiliations

  1. Lehrstuhl fur Fluidmechanik und Prozeautomation, Technische Universitat Munchen, D-85350, Freising, Germany

    M. Lutz & V. Denk

  2. Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, CZ-16502, Prague, Czech Republic

    K. Wichterle & V. Sobolik

Authors
  1. M. Lutz
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  2. V. Denk
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  3. K. Wichterle
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  4. V. Sobolik
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Lutz, M., Denk, V., Wichterle, K. et al. Electrodiffusional flow diagnostics in a centrifugal pump. Journal of Applied Electrochemistry 28, 337–342 (1998). https://doi.org/10.1023/A:1003276002641

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  • DOI: https://doi.org/10.1023/A:1003276002641

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