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Three-Dimensional Navier-Stokes Analysis of a Two-Stage Gas Turbine PUBLIC ACCESS

[+] Author Affiliations
Andrea Arnone

University of Florence, Florence, Italy

Erio Benvenuti

Nuovo Pignone S.p.A., Florence, Italy

Paper No. 94-GT-088, pp. V001T01A034; 8 pages
doi:10.1115/94-GT-088
From:
  • ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 1: Turbomachinery
  • The Hague, Netherlands, June 13–16, 1994
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7883-5
  • Copyright © 1994 by ASME

abstract

A three-dimensional Navier-Stokes solver has been extended to include multi-row capability. The coupling between the various rows is implemented by means of mixing planes. Those planes are handled by retaining the radial distortions while mass-averaging in the pitch-wise direction. The code is applied to a two-stage, heavy-duty gas turbine at design conditions. A comparison of pitch-averaged quantities between blade rows with preliminary measurements and with through flow analysis is presented along with a discussion of the flow features in terms of secondary flows. Using roughly half a million grid points, an operating condition can be examined in about an hour on a modem supercomputer.

Copyright © 1994 by ASME
Topics: Gas turbines
This article is only available in the PDF format.

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