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Title: Off-design performance of a single-stage transonic turbine

Abstract

This paper presents results of rig testing of a transonic, single-stage turbine at off-design conditions. Mapping of the 3.4 pressure ratio, 1.9 stage loading turbine ranged from 70 through 120% of design speed and 75 to 125% of design pressure ratio. Results show expansion efficiency dropping over 4% from 100 to 80% of design speed at design pressure ratio, while remaining within half a percent from 90 to 110% of design pressure ratio at design speed. Efficiency lapse rate from equivalent sea-level to cruise altitude Reynolds numbers at the design point was measured and found to be worth over 1.5%. Analyses of test results using a viscous three-dimensional solver showed very good agreement for the efficiency change with speed.

Authors:
; ; ;  [1]
  1. Pratt and Whitney Canada, Inc., Longueuil, Quebec (Canada)
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
351613
Report Number(s):
CONF-980615-
Journal ID: JOTUEI; ISSN 0889-504X; TRN: IM9927%%138
Resource Type:
Journal Article
Journal Name:
Journal of Turbomachinery
Additional Journal Information:
Journal Volume: 121; Journal Issue: 2; Conference: American Society of Mechanical Engineers (ASME) turbo expo `98 - land, sea, air, Stockholm (Sweden), 2-5 Jun 1998; Other Information: PBD: Apr 1999
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; GAS TURBINE ENGINES; PERFORMANCE; TRANSONIC FLOW; ENERGY EFFICIENCY; GAS COMPRESSORS

Citation Formats

Woinowsky-Krieger, M, Lavoie, J P, Vlasic, E P, and Moustapha, S H. Off-design performance of a single-stage transonic turbine. United States: N. p., 1999. Web. doi:10.1115/1.2841299.
Woinowsky-Krieger, M, Lavoie, J P, Vlasic, E P, & Moustapha, S H. Off-design performance of a single-stage transonic turbine. United States. https://doi.org/10.1115/1.2841299
Woinowsky-Krieger, M, Lavoie, J P, Vlasic, E P, and Moustapha, S H. 1999. "Off-design performance of a single-stage transonic turbine". United States. https://doi.org/10.1115/1.2841299.
@article{osti_351613,
title = {Off-design performance of a single-stage transonic turbine},
author = {Woinowsky-Krieger, M and Lavoie, J P and Vlasic, E P and Moustapha, S H},
abstractNote = {This paper presents results of rig testing of a transonic, single-stage turbine at off-design conditions. Mapping of the 3.4 pressure ratio, 1.9 stage loading turbine ranged from 70 through 120% of design speed and 75 to 125% of design pressure ratio. Results show expansion efficiency dropping over 4% from 100 to 80% of design speed at design pressure ratio, while remaining within half a percent from 90 to 110% of design pressure ratio at design speed. Efficiency lapse rate from equivalent sea-level to cruise altitude Reynolds numbers at the design point was measured and found to be worth over 1.5%. Analyses of test results using a viscous three-dimensional solver showed very good agreement for the efficiency change with speed.},
doi = {10.1115/1.2841299},
url = {https://www.osti.gov/biblio/351613}, journal = {Journal of Turbomachinery},
number = 2,
volume = 121,
place = {United States},
year = {Thu Apr 01 00:00:00 EST 1999},
month = {Thu Apr 01 00:00:00 EST 1999}
}