Detailed measurements were taken in the nozzle of a low speed single stage axial flow turbine at two axial planes inside the nozzle and on the nozzle and endwall surfaces. Velocity, turbulence and angle measurements were taken at midchord with an LDV while a five hole probe was used to measure the pressure, velocities and angles just upstream of the trailing edge. Nozzle surface and endwall static pressures were also measured. These measurements were compared to measurements previously completed at two axial planes downstream of the nozzle. The results show that at midchord, the secondary flow seems to be weak and it is in the early stages of development. Just upstream of the trailing edge, the secondary flow is clearly visible. The radially inward flow near the suction surface augments the casing passage vortex, while counteracting the hub passage vortex. Traveling downstream, the casing passage vortex remains strong while at the hub, the radially inward flow of the suction surface boundary layer has reversed direction due to the rotating hub. The blade static pressures and the passage averaged velocities compare well with Katsanis' quasi-three-dimensional code. These and other data are presented, interpreted and synthesized to understand the nozzle flow field.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Three-dimensional flow field in a turbine nozzle passage


    Beteiligte:
    Zaccaria, M. (Autor:in) / Ristic, D. (Autor:in) / Lakshminarayana, B. (Autor:in)

    Kongress:

    AIAA, SAE, ASME, and ASEE, Joint Propulsion Conference and Exhibit ; 1993 ; Monterey, CA, United States


    Erscheinungsdatum :

    1993-06-01


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Three-dimensional flow field in a turbine nozzle passage

    ZACCARIA, M. / RISTIC, D. / LAKSHMINARAYANA, B. | AIAA | 1993


    Three-dimensional flowfield in a turbine nozzle passage

    Zaccaria, M. / Ristic, D. / Lakshminarayana, B. | AIAA | 1996


    Three Dimensional Flowfield in a Turbine Nozzle Passage

    Zaccaria, M. | Online Contents | 1996