Advances in flow measurement techniques in turbomachinery continue to be paced by the need to obtain detailed data for use in validating numerical predictions of the flowfield and for use in the development of emprical models for those flow features which cannot be readily modelled numerically. The use of laser anemometry in turbomachinery research has grown over the last 14 yr in response to these needs. Based on past applications and current developments, this paper reviews the key issues which are involved when considering the application of laser anemometry to the measurement of turbomachinery flowfields. Aspects of laser fringe anemometer optical design which are applicable to turbomachinery research are briefly reviewed. Application problems which are common to both laser fringe anemometry (LFA) and laser transit anemometry (LTA) such as seed particle injection, optical access to the flowfield, and measurement of rotor rotational position are covered. The efficiency of various data acquisition schemes is analyzed and issues related to data integrity and error estimation are addressed. Real-time data analysis techniques aimed at capturing flow physics in real time are discussed. Finally, data reduction and analysis techniques are discussed and illustrated using examples taken from several LFA turbomachinery applications.


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    Title :

    Laser fringe anemometry for aero engine components


    Additional title:

    Laser-Beugungs-Anemometrie fuer Komponenten von Maschinen der Luft- und Raumfahrt


    Contributors:


    Publication date :

    1986


    Size :

    53 Seiten, 36 Bilder, 2 Tabellen, 35 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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