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.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

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


    Contributors:
    Li, Zhen (author) / Ju, Yaping (author) / Zhang, Chuhua (author)

    Published in:

    Publication date :

    2019-09-30


    Size :

    12 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English






    Very Large Eddy Simulation of a Transonic Axial Compressor Stage

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


    Large-eddy simulation of subsonic and supersonic film cooling flows

    Konopka, Martin Max Ewald Wilhelm | TIBKAT | 2012


    Subsonic and transonic transitional cavity flows

    Henderson, J. / Badcock, K. / Richards, B. | AIAA | 2000