This paper presents the results of a combined experimental and computational research program to investigate turbine vane and blade material surface deterioration caused by solid particle impacts. Tests are conducted in the erosion wind tunnel for coated and uncoated blade materials at various impact conditions. Surface roughness measurements obtained prior and subsequent to the erosion tests are used to characterize the change in roughness caused by erosion. Numerical simulations for the three-dimensional flow field and particle trajectories through a low-pressure gas turbine are employed to determine the particle impact conditions with stator vanes and rotor blades using experimentally based particle restitution models. Experimental results are presented for the measured blade material/coating erosion and surface roughness. The measurements indicate that both erosion and surface roughness increase with impact angle and particle size. Computational results are presented for the particle trajectories through the first stage of a low-pressure turbine of a high bypass turbofan engine. The trajectories indicate that the particles impact the vane pressure surface and the aft part of the suction surface. The impacts reduce the particle momentum through the stator but increase it through the rotor. Vane and blade surface erosion patterns are predicted based on the computed trajectories and the experimentally measured blade coating erosion characteristics.
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July 2005
Technical Papers
Turbine Blade Surface Deterioration by Erosion
Awatef A. Hamed,
Awatef A. Hamed
Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati
, Cincinnati, OH 45220
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Widen Tabakoff,
Widen Tabakoff
Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati
, Cincinnati, OH 45220
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Richard B. Rivir,
Richard B. Rivir
Aeropropulsion and Power Directorate, Air Force Research Laboratory
, Wright Laboratories Building 18, Wright Patterson AFB, OH 45433
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Kaushik Das,
Kaushik Das
Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati
, Cincinnati, OH 45220
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Puneet Arora
Puneet Arora
Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati
, Cincinnati, OH 45220
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Awatef A. Hamed
Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati
, Cincinnati, OH 45220
Widen Tabakoff
Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati
, Cincinnati, OH 45220
Richard B. Rivir
Aeropropulsion and Power Directorate, Air Force Research Laboratory
, Wright Laboratories Building 18, Wright Patterson AFB, OH 45433
Kaushik Das
Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati
, Cincinnati, OH 45220
Puneet Arora
Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati
, Cincinnati, OH 45220J. Turbomach. Jul 2005, 127(3): 445-452 (8 pages)
Published Online: March 1, 2004
Article history
Received:
October 1, 2003
Revised:
March 1, 2004
Citation
Hamed, A. A., Tabakoff, W., Rivir, R. B., Das, K., and Arora, P. (March 1, 2004). "Turbine Blade Surface Deterioration by Erosion." ASME. J. Turbomach. July 2005; 127(3): 445–452. https://doi.org/10.1115/1.1860376
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