Blade erosion in automotive gas turbine engine

Journal Article · Sun Jan 01 04:00:00 EST 1995 · Journal of Engineering for Gas Turbines and Power

DOI:https://doi.org/10.1115/1.2812774· OSTI ID:31914

Metwally, M; Tabakoff, W; Hamed, A ^[1]

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1. Univ. of Cincinnati, OH (United States). Dept. of Aerospace Engineering and Engineering Mechanics

In this work, a study has been conducted to predict blade erosion and surface deterioration of the free power turbine of an automotive gas turbine engine. The blade material erosion model is based on three-dimensional particle trajectory simulations in the three-dimensional turbine flow field. The particle rebound characteristics after surface impacts were determined from experimental measurements of restitution ratios for blade material samples in a particulate flow tunnel. The trajectories provide the spatial distribution of the particle impact parameters over the blade surface. A semi-empirical erosion model, derived from erosion tests of material samples at different particulate flow conditions, is used in the prediction of blade surface erosion based on the trajectory impact data. The results are presented for the three-dimensional particle trajectories through the turbine blade passages, the particle impact locations, blade surface erosion pattern, and the associated erosion parameters. These parameters include impact velocity, impact angle, and impact frequency. the data can be used for life prediction and performance deterioration of the automotive engine under investigation.

• Sponsoring Organization: USDOE
• OSTI ID: 31914
• Report Number(s): CONF-930502--
• Journal Information: Journal of Engineering for Gas Turbines and Power, Journal Name: Journal of Engineering for Gas Turbines and Power Journal Issue: 1 Vol. 117; ISSN JETPEZ; ISSN 0742-4795
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
AUTOMOBILES
COMPUTER CALCULATIONS
EROSION
FORECASTING
GAS TURBINE ENGINES
TURBINE BLADES