HPT blade unsteadiness in the presence of a downstream vane consistent with contra-rotation is characterized by strong interaction at the first harmonic of downstream vane passing. E An existing stage-and-one-half transonic turbine rig design was used as a baseline to investigate means of reducing such a blade-vane interaction. E Methods assessed included: Aerodynamic shaping of HPT blades 3D stacking of the downstream vane Steady pressure-side blowing E Of the methods assessed, a combination of vane bowing and steady pressure-side blowing produced the most favorable result. E Transonic turbine experiments are planned to assess predictive accuracy for the baseline turbine and any design improvements.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Reduction of Unsteady Forcing in a Vaned, Contra-Rotating Transonic Turbine Configuration


    Contributors:
    Clark, John (author)


    Publication date :

    2010-02-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English


    Keywords :




    Aerodynamic characteristic study of axial transonic highly loaded contra-rotating turbine

    Xiangjun, F. / Siyong, L. / Ping, W. | British Library Online Contents | 2003


    Calculation of Unsteady Flow for Interaction between Rotating Impeller and Vaned Diffuser

    Suping, W. / Chuhua, Z. / Jinyin, L. | British Library Online Contents | 2004