Linear cascade testing was performed to simulate the flow conditions experienced by stator blades in an axial compressor with supersonic relative Mach numbers at the inlet to the downstream embedded rotors. Experiments were conducted in a transonic blow-down wind tunnel with a nominal inlet Mach number of 0.65. A single moving normal shock introduced at the exit of the stator cascade simulated the bow shock from a downstream rotor. The shock was generated using a shock tube external to the wind tunnel. Pressure measurements indicated that the stator matched its design intent loading, turning, and loss under steady flow conditions. Effects of the passing shock on the stator flowfield were investigated using shadowgraph photography and digital particle image velocimetry (DPIV). Measurements were taken with three different shock strengths. In each case, the passing shock induced a vortex around the trailing edge of the stator. The size and strength of these vortices were directly related to the shock strength. A suction side separation on the trailing edge of the stator was observed and found to correlate with the vortex blockage.
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January 2007
Technical Papers
Experimental Investigation of the Effects of a Moving Shock Wave on Compressor Stator Flow
Jordi Estevadeordal
e-mail: jordi@innssi.com
Jordi Estevadeordal
Innovative Scientific Solutions, Inc.
, 2766 Indian Ripple Road, Dayton, OH 45440
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Matthew D. Langford
Andrew Breeze-Stringfellow
Stephen A. Guillot
William Solomon
Wing F. Ng
Jordi Estevadeordal
Innovative Scientific Solutions, Inc.
, 2766 Indian Ripple Road, Dayton, OH 45440e-mail: jordi@innssi.com
J. Turbomach. Jan 2007, 129(1): 127-135 (9 pages)
Published Online: February 1, 2005
Article history
Received:
October 1, 2004
Revised:
February 1, 2005
Citation
Langford, M. D., Breeze-Stringfellow, A., Guillot, S. A., Solomon, W., Ng, W. F., and Estevadeordal, J. (February 1, 2005). "Experimental Investigation of the Effects of a Moving Shock Wave on Compressor Stator Flow." ASME. J. Turbomach. January 2007; 129(1): 127–135. https://doi.org/10.1115/1.2370745
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