Effects of Variational Particle Restitution Characteristics on Turbomachinery Erosion-Reference-Cited by-同舟云学术

Effects of Variational Particle Restitution Characteristics on Turbomachinery Erosion

Published:1995-07-01 Issue:3 Volume:117 Page:432-440
ISSN:0742-4795
Container-title:Journal of Engineering for Gas Turbines and Power
language:en
Short-container-title:

Author:

Hamed A.¹,Kuhn T. P.¹

Affiliation:

1. Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati, Cincinnati, OH 45221

Abstract

This paper presents the results of an investigation to determine the effects of variational particle rebounding models on surface impacts and blade erosion patterns in gas turbines. The variance in the particle velocities after the surface impacts are modeled based on the experimental measurements using Laser-Doppler Velocimetry (LDV) under varying flow conditions. The probabilistic particle trajectory computations simulate the experimental variance in the particle restitution characteristics using cumulative distribution functions and random sampling techniques. The results are presented for the particle dynamics through a gas turbine flow field and are compared to those obtained with deterministic rebound models based on experimental mean values.

Publisher

ASME International

Subject

Mechanical Engineering,Energy Engineering and Power Technology,Aerospace Engineering,Fuel Technology,Nuclear Energy and Engineering

Link

http://asmedigitalcollection.asme.org/gasturbinespower/article-pdf/117/3/432/5889038/432_1.pdf

Reference15 articles.

1. Fox, E. P., and Safie, F., 1992, “Statistical Characterization of Life Drivers for a Probabilistic Design Analysis,” AIAA Paper No. 92-3414.

2. Hamed, A., Tabakoff, W., and Mansour, M., 1986, “Turbine Erosion Exposed to Particulate Flow,” ASME Paper No. 86-GT-258.

3. Hamed A. , 1988, “Effect of Particle Characteristics on Trajectories and Blade Impact Patterns,” ASME Journal of Fluids Engineering, Vol. 110, pp. 33–37.

4. Hamed, A., Tabakoff, W., and Wenglarz, R., 1988, “Particulate Flow and Blade Erosion,” von Karman Institute for Fluid Dynamics Lecture Series.

5. Hamed, A., and Tabakoff, W., 1991, “Experimental Investigation of Particle Surface Interactions for Turbomachinery Applications,” Laser Anemometry Advances and Applications, Vol. 2, Proceedings of the Fourth International Conference on Laser Anemometry, Advances and Applications, Cleveland, OH, ASME, pp. 775–780.

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