Flow and Blade Loading in Centrifugal Impellers

  • J. P. Edwards
  • D. R. Glynn
  • D. G. Tatchell
Conference paper
Part of the Lecture Notes in Engineering book series (LNENG, volume 18)


PHOENICS-81. with body fitted coordinates, has been applied to the simulation of the three-dimensional viscous flow in a centrifugal impeller blade passage. The rotation of the coordinate system is represented by introducing momentum sources corresponding to the centrifugal and Coriolis accelerations. The whole of the blade passage is modelled, including the inducer, and a portion of the vaneless diffuser. This permits a uniform exit pressure boundary condition to be applied. The specification of impeller geometries has been automated, so that surface shapes which can be represented in terms of circular arcs and straight sections can easily be defined and modified by the user.

For the calculations reported a simple uniform-viscosity representation of turbulence is used. The experimental data used for comparison are those of Mizuki et al, in which the flow is, in effect, incompressible. Two impeller shapes are considered, one having no net diffusion in the rotor and the other having very high diffusion. Two flowrates have been considered, representing the design flow and a flowrate 25% greater. For both shapes, the overall pressure rise in the passage is well predicted. For the shape with no net diffusion, the results are in good agreement with experiment. For the more-severe high-diffusion case, the predicted pressure rise is correct, but detailed comparison of the results with experiment shows certain discrepancies in the off-design case. Nevertheless, the predictions are seen to reflect the observed trends in the data.


Centrifugal Compressor Suction Surface Flow Coefficient Blade Passage Machine Axis 
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  1. 1.
    M R MALIN. H I ROSTEN & D G TATCHELL ‘Three-Dimensional Computations of Flows in Centrifugal Pumps and Compressors’, Paper Presented at ASME Gas Turbine Conference. New Orleans, USA, March 1980.Google Scholar
  2. 2.
    D R GLYNN, M C GUNTON. M R MALIN. H I ROSTEN. D BRIAN SPALDING and D G TATCHELL ‘Use of the Body-Fitted-Coordinate Scheme in PHOENICS’, CHAM Technical Report Number CHAM/TR/97, November 1984.Google Scholar
  3. 3.
    SHINPEI MIZUKI, ICHIRO ARIGA & ICHIRO WATANABE ‘Investigation Concerning the Blade Loading of Centrifugal Impellers’, ASME Gas Turbine Conference Paper 74-GT-143, 1974.Google Scholar
  4. 4.
    M R MALIN, H I ROSTEN, D B SPALDING & D G TATCHELL ‘The Application of Body-Fitted-Coordinates in the PHOENICS Computer Code to the Simulation of the Flow Around Ship’s Hulls’, CHAM Technical Report Number CHAM TR/107, November 1984.Google Scholar
  5. 5.
    D. ECKARDT ‘Detailed Flow Investigations Within a High-Speed Centrifugal Compressor Impeller’, Journal of Fluids Engineering. Trans. ASME. Series 1. Volume 98. 1976.Google Scholar
  6. 6.
    J P EDWARDS, D R GLYNN & D G TATCHELL ‘Flow and Blade Loading in Centrifugal Impellers’, CHAM Technical Report Number CHAM TR/122. June 1985.Google Scholar

Copyright information

© Springer-Verlag Berlin, Heidelberg 1986

Authors and Affiliations

  • J. P. Edwards
    • 1
  • D. R. Glynn
    • 1
  • D. G. Tatchell
    • 1
  1. 1.Concentration Heat and Momentum LimitedWimbledon, LondonUK

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