A one-dimensional, stage-by-stage axial compression system mathematical model has been constructed which can describe system behavior during post-stall events such as surge and rotating stall. The model uses a numerical technique to solve the nonlinear conservation equations of mass, momentum, and energy. Inputs for blade forces and shaft work are provided by a set of quasi-steady stage characteristics modified by a first-order lagging equation to simulate dynamic stage characteristics. The model was validated with experimental results for a three-stage, low-speed compressor and a ninestage, high-pressure compressor. Using the model, a parametric study was conducted to determine the effect on post-stall system behavior of inlet resistance, combustor performance, heat transfer, and stage characteristic changes. Results demonstrate a new capability for the analysis of design options and operating conditions on compression system poststall behavior.


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    Titel :

    A stage-by-stage post-stall compression system modeling technique


    Weitere Titelangaben:

    Methode zur stufenweisen Berechnung und Modellierung von Druckverhaeltnissen nach Eintreffen des ueberzogenen Flugzustands


    Beteiligte:
    Davis, M.W. (Autor:in) / O'Brien, W.F. (Autor:in)

    Erschienen in:

    AIAA-Papers ; Jul ; 1-14


    Erscheinungsdatum :

    1987


    Format / Umfang :

    14 Seiten, 23 Bilder, 17 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    Stage-by-stage poststall compression system modeling technique

    DAVIS, M. W. / O'BRIEN, W. F. | AIAA | 1991


    Axial-flow compressor stage post-stall analysis

    COUSINS, W. / OBRIEN, W. | AIAA | 1985