Communications Project

Document Type:Master's Thesis
Name:Kelly R. Navarra
Title:Development of the Pressure-Sensitive-Paint Technique for Advanced Turbomachinery Applications.
Degree:Master of Science
Department:Mechanical Engineering
Committee Chair: Dr. W. F. O'Brien
Committee\ Members:
Keywords:Pressure-sensitive paint, turbomachinery, optical pressure measurement techniques, luminescence quenching.
Date of defense:April 24, 1997
Availability:Release the entire work immediately worldwide.


A new pressure-measurement technique which employs the tools of molecular spectroscopy has recently received considerable attention in the fluid mechanics community. Measurements are made via oxygen-sensitive molecules attached to the surface of interest as a coating, or paint. The pressure-sensitive-paint (PSP) technique is now commonly used in stationary wind-tunnel tests; this thesis presents the extension of the technique to advanced turbomachinery applications. New pressure- and temperature-sensitive paints (TSPs) have been developed for application to a state-of-the-art transonic compressor where pressures up to 2 atm and surface temperatures up to 140 degrees C are expected for the first-stage rotor. PSP and TSP data has been acquired from the suction surface of the first-stage rotor of a transonic compressor operating at its peak-efficiency condition. The shock structure is clearly visible in the pressure image, and visual comparison to the corresponding computational fluid dynamics (CFD) prediction shows qualitative agreement to the PSP data.

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