Aerodynamic Response of Turbomachinery Blade Rows to Convecting Density Wakes-Reference-Cited by-同舟云学术

Aerodynamic Response of Turbomachinery Blade Rows to Convecting Density Wakes

Published:2002-04-01 Issue:2 Volume:124 Page:269-274
ISSN:0889-504X
Container-title:Journal of Turbomachinery
language:en
Short-container-title:

Author:

Wijesinghe H. S.¹,Tan C. S.²,Covert E. E.²

Affiliation:

1. Gas Turbine Laboratory, Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, Cambridge, MA 02139

2. Gas Turbine Laboratory, Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, Cambridge, MA 02139

Abstract

Abstract A two-dimensional computational study was conducted to characterize the density wake induced force and moment fluctuations on a compressor blade row. The flow simulations indicate unsteady blade excitation generated by: (1) density wake fluid directed to the blade suction surface, (2) axial deflection of the blade passage shock wave position and (3) formation of a separation bubble on the blade suction surface. The blade force and moment fluctuation amplitudes are found to scale with the nondimensional density wake width w/c and a nondimensional density parameter ρ*.

Publisher

ASME International

Subject

Mechanical Engineering

Link

https://asmedigitalcollection.asme.org/turbomachinery/article-pdf/124/2/269/6838154/269_1.pdf

Reference11 articles.

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3. Valkov, Theodore V., 1992, “Control of Unsteady Flow in a Stator Blade Row Interacting With Upstream Moving Wakes.” S. M. Thesis, Massachusetts Institute of Technology, Department of Aeronautics and Astronautics; also GTL Report No. 255, May.

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