This paper quantifies the changes in turbine performance due to manufacturing tolerances and profile degradation of the blade-tip region during engine operation. An extensive numerical study was conducted on a modern high-pressure turbine rotor, operating at high Reynolds and high subsonic outlet conditions. The stochastic collocation method was used to investigate the effects of the geometrical variability of a single squealer tip design. The variation of three geometrical characteristics was investigated: tip clearance size, squealer depth, and rim corner radius. Three-dimensional Reynolds-averaged Navier–Stokes simulations were performed to predict the aerodynamic and heat transfer characteristics. The results highlight the influence of the combined geometrical variability on the overtip flow structures, heat transfer signatures, loss development, and downstream flow characteristics. This study measures the robustness of squealer tip designs to changes in its geometry and demonstrates the necessity of anticipating the consequences of these unavoidable tip geometry variabilities in an early development stage of the turbine design optimization.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Performance Robustness of Turbine Squealer Tip Designs Due to Manufacturing and Engine Operation


    Beteiligte:
    De Maesschalck, C. (Autor:in) / Lacor, C. (Autor:in) / Paniagua, G. (Autor:in) / Lavagnoli, S. (Autor:in) / Remiot, A. (Autor:in) / Bricteux, L. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2017-03-29


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch