The passage-averaged flow model was proved to be a more rigorous and complicated model than the mixing plane model in the flow prediction of multi-stage turbomachinery using the steady-state method. In the present work, the novel time- and passage-averaging operators are applied and a reduced average-passage N-S equation system is derived, in which the bodyforce and the blockage factor are eliminated. In order to consider the time-averaged effect of the periodic unsteadiness, a semi-empirical model with the interface approach is employed to evaluate the deterministic stresses instead of overlapping domain approach. Finally, two computations for a tested centrifugal compressor are performed and compared with the corresponding experimental data to verify the reduced passage-averaged equation system and the corresponding numerical method: one is the solution of the reduced passage-averaged equations with a semiempirical model and; the other is that of the steady Navier-Stokes equations with the mixing plane.


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    Titel :

    Reduced passage-averaged N-S equations of the threedimensional flowfield in a multi-stage environment


    Beteiligte:
    Gao, L M (Autor:in) / Xi, G (Autor:in) / Liu, B (Autor:in) / Wang, S J (Autor:in)


    Erscheinungsdatum :

    2007-03-01


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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