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On the Transport of Spatial Fluctuation Correlations in a Turbine Stator PUBLIC ACCESS

[+] Author Affiliations
G. Perrin, F. Leboeuf

Ecole Centrale de Lyon, Ecully, France

Paper No. 94-GT-330, pp. V001T01A108; 7 pages
doi:10.1115/94-GT-330
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

When averaging the Navier-Stokes or Euler equations in the circumferential direction of a turbomachine, some so-called “spatial fluctuation terms” appear in the averaged conservation equations. We give the transport equations for these kinematic spatial fluctuation correlations. We evaluate the various terms in these equations, using the results of a three-dimensional Navier-Stokes computation. The test case is a highly loaded subsonic turbine stator.

We discuss the magnitudes of the various terms. It is shown that blade force terms and diffusion terms have dominant effects, as respect to the production by the averaged field and the shear stress terms. The dissipation of the fluctuation kinetic energy occurs mainly in the passage vortex area, and in the blade wake.

Copyright © 1994 by ASME
Topics: Turbines , Stators
This article is only available in the PDF format.

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