Laminar–turbulent transition plays a critical role in the aerodynamic performance of compressors and is sensitive to flow conditions and external disturbances. In the present work, a parallel large-eddy-simulation solver is developed and applied to investigate the effects of free-stream turbulence on the mode and location of transition on the blade suction surface of a compressor cascade under subsonic and transonic conditions. Both the parallel accuracy and efficiency of the solver are demonstrated. The transition location is observed to shift upstream as the free-stream turbulence level increases at both the subsonic and transonic conditions. Moreover, increasing the free-stream turbulence level from 0 to 4% causes the transition mode to change from Kelvin–Helmholtz instability-induced transition to bypass transition in the case of subsonic flow, whereas transition occurs in a Kelvin–Helmholtz instability-induced mode even at a high free-stream turbulence level of up to 7% in the case of transonic flow. The work demonstrates the ability of the parallel large-eddy-simulation method to capture the transitional-flow structures in compressor cascades and its potential application to the analysis and design of advanced compressor.


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    Titel :

    Parallel Large-Eddy Simulation of Subsonic and Transonic Flows with Transition in Compressor Cascade


    Beteiligte:
    Li, Zhen (Autor:in) / Ju, Yaping (Autor:in) / Zhang, Chuhua (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.11.2019




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





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    Teramoto, S. / American Institute of Aeronautics and Astronautics / Society of Automotive Engineers et al. | British Library Conference Proceedings | 2005


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    Very Large Eddy Simulation of a Transonic Axial Compressor Stage

    Kelly, Ryan / Hickman, Adam R. / Shi, Ke et al. | AIAA | 2016