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LDV Measurements in the Endwall Region of an Annular Turbine Cascade Through an Aerodynamic Window

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Author
Hobson, G. V.
Donovan, W. H.
Spitz, J. D.
Date
1997
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Abstract
Laser-Doppler velocimetry measurements through a one millimeter hole in the casing of an annular turbine cascade were performed in the endwall region downstream of the blade row. Complementary threehole pressure probe measurements were also taken downstream of the nozzle blades, as well as blade surface pressure measurements. The object of this study was to devise methods for the measurement close to an endwall and to overcome the problems associated with optical access window contamination. The eventual aim of the project was to perform laser anemometry measurements in the tip leakage region of an operating turbine of comparable size. Good comparisons with numerical predictions of the flowfield were also obtained.
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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http://hdl.handle.net/10945/36392
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    LDV measurements in the endwall region of an annular turbine cascade through an aerodynamic window 

    Hobson, G. V.; Donovan, W. H.; Spitz, J. D. (American Institute of Aeronautics and Astronautics, 1997);
    Laser-Doppler velocimetry measurements through a one millimeter hole in the casing of an annular turbine cascade were performed in the endwall region downstream of the blade row. Complimentary three-hole pressure probe ...
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    Experimental and computational investigation of flow through an annular turbine cascade 

    Donovan, William Howard. (Monterey, California. Naval Postgraduate School, 1995-06);
    The purpose of this research was to compare numerical predictions with experimental results and to devise an accurate laser anemometry technique to measure in the endwall region of a confined annulus. Flowfield characteristics ...
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    Laser anemometry and pressure measurements in the endwall region of an annular turbine cascade utilizing a pressurized aerodynamic window 

    Guerrera, Michael H. (Monterey, California. Naval Postgraduate School, 1996-09);
    The purpose of this research was to compare previous laser anemometry measurements obtained through an unpressurized laser window with the results from a pressurized laser window and to validate this innovative measuring ...
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