Numerical Simulation of Impeller–Volute Interaction in Centrifugal Compressors PUBLIC ACCESS

[+] Author Affiliations
Koen Hillewaert, René A. Van den Braembussche

von Karman Institute for Fluid Dynamics, St-Genesius-Rode, Belgium

Paper No. 98-GT-244, pp. V001T01A059; 8 pages
  • ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 1: Turbomachinery
  • Stockholm, Sweden, June 2–5, 1998
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7862-0
  • Copyright © 1998 by ASME


A numerical procedure to predict the impeller/volute interaction in a single-stage centrifugal compressor is presented. The method couples a three-dimensional unsteady flow calculation in the impeller with a three-dimensional time-averaged flow calculation in the volute through an iterative updating of the boundary conditions on the interface of both calculation domains.

The method has been used to calculate the flow in a compressor with an external volute at off-design operation. Computed circumferential variations of flow angles, total temperature and pressure are shown and compared with measurements. The good agreement between the predictions and measurements confirms the validity of the approach.

Copyright © 1998 by ASME
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