A combined experimental and computational approach has been used to investigate the stall inception mechanisms and subsequent poststall behavior of a single-stage axial compressor running at different operating conditions, determined by its rotational speed. This paper emphasizes differences in the origin of stall inception depending on the associated inlet flow regimes: 60% speed (subsonic), 80% speed (transonic), and 100% speed (supersonic). At all speeds, stall is initiated with spike-type disturbances that develop into full-span rotating stall. This paper demonstrates for the first time that for a single compressor geometry, a variety of mechanisms can be responsible for the sources of the blockage leading to stall inception depending on the rotational speed. At 60% speed, the inlet flow is subsonic and the primary driver is a corner separation forming between the casing and blade suction surface. At 80% speed, the spillage of tip leakage jet ahead of the leading-edge plane combines with a small shock-induced corner separation to cause sufficient total blockage and subsequent stall inception. Finally, at 100% speed, the mechanisms are the same as at 80% speed but with a greater blockage contribution from the corner separation due to a stronger shock creating a larger separation.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Stall Inception in a Compressor with Subsonic, Transonic, and Supersonic Inlet Conditions


    Beteiligte:
    Kim, Semi (Autor:in) / Choi, Jaeho (Autor:in) / Gunn, Ewan (Autor:in) / Brandvik, Tobias (Autor:in) / Kang, Young Seok (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.05.2022




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Stall Inception Prediction of Transonic Compressor with Wire Mesh Casing Treatment

    Sun, Dakun / Hu, Jiahao / Xu, Dengke et al. | AIAA | 2024


    EXPERIMENTAL STUDY OF STALL-INCEPTION OF A SINGLE-STAGE TRANSONIC COMPRESSOR

    Bergner, J. / Hennecke, D. K. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2003




    Stall inception induced by the volute tongue at centrifugal compressor inlet

    Yang, Ce / Wang, Yingjun / Tong, Ding et al. | SAGE Publications | 2017