This paper describes a lifetime PSP system that has recently been developed using pulsed light-emitting diode (LED) lamps and a new interline transfer CCD camera technology. This system alleviates noise sources associated with lifetime PSP systems that use either flash-lamp or laser excitation sources and intensified CCD cameras for detection. Calibration curves have been acquired for a variety of PSP formulations using this system, and a validation test was recently completed in the subsonic aerodynamic research laboratory (SARL) at Wright-Patterson air force base (WPAFB). In this test, global surface pressure distributions were recovered using both a standard intensity-based method and the new lifetime system. Results from the lifetime system agree both qualitatively and quantitatively with those measured using the intensity-based method. Finally, an advanced lifetime imaging technique capable of measuring temperature and pressure simultaneously is introduced and initial results are presented.


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    Title :

    Development of next generation lifetime PSP imaging systems


    Contributors:
    Watkins, A.N. (author) / Jordan, J.D. (author) / Leighty, B.D. (author) / Ingram, J.L. (author) / Oglesby, D.M. (author)


    Publication date :

    2003


    Size :

    11 Seiten, 21 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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