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High-Speed Flow in an Annular Cascade With Tip Clearance: Numerical Investigation PUBLIC ACCESS

[+] Author Affiliations
E. S. Politis, K. C. Giannakoglou, K. D. Papailiou

National Technical University of Athens, Athens, Greece

Paper No. 98-GT-247, pp. V001T01A062; 9 pages
doi:10.1115/98-GT-247
From:
  • 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

abstract

The high-speed flow in an annular cascade with two tip clearance sizes is numerically modeled using a Navier-Stokes solver and the high-Reynolds-number k-ε turbulence model. The numerical predictions should be regarded as complementary to the experimental work conducted in the NTUA annular cascade facility, designed for studying tip-clearance effects in compressor cascades. In the numerically simulated experiment, the stationary blades are mounted on the casing and the tip clearance is formed between them and the spinning hub. The purpose of the present paper is to scrutinize flow trends identified during the measurements and elucidate the flow patterns in the blade passage for rotating and stationary hub.

Copyright © 1998 by ASME
This article is only available in the PDF format.

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