The three-dimensional unsteady Reynolds-averaged Navier–Stokes k-omega-Shear Stress Transport Langtry-Menter (SSTLM) and k T k L ω turbulence models were studied to understand their application and transition prediction capability for incompressible flow regimes. Additionally, a novel protocol is presented for systematically studying the near-wall flow physics over a sharp trailing-edged SD7003 airfoil subjected to flow with varying freestream intensities and angles of attack and at three chord-based Reynolds numbers of 6 × 10 4 , 6 × 10 5 , and 6 × 10 6 . A complex low-Reynolds-number near-wall flow phenomenon known as the formation and destruction of the laminar separation bubble, eventually leading to flow transition from the laminar to the turbulent regimes, was resolved using both turbulence models; and their accuracy was compared with implicit large-eddy simulation surface pressure predictions. Mean and instantaneous flowfields were extracted, thus leading to a more thorough quantitative and qualitative comparison. Considering all flow characteristics, the correlation-based k ω SSTLM turbulence model was shown to predict more reasonable flow transition characteristics for simple airfoil configurations.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    A Comparison of Physics- and Correlation-Based Turbulence Models at Low Reynolds Numbers


    Beteiligte:
    Ranjan, Prateek (Autor:in) / Warton, Wesley J. (Autor:in) / James, Kai A. (Autor:in)

    Erschienen in:

    Journal of Aircraft ; 57 , 1 ; 128-142


    Erscheinungsdatum :

    2019-11-27


    Format / Umfang :

    15 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





    A new screen for turbulence attenuation at higher Reynolds numbers

    McKeage, Bradley / Vakili, Ahmad | AIAA | 1997



    Compressible turbulence predicted by Reynolds stress models

    Borgnakke,C. / Xiao,Y. / Univ.of Michigan,Ann Arbor,US | Kraftfahrwesen | 1991


    Compressible Turbulence Predicted by Reynolds Stress Models

    Borgnakke, C. / Xiao, Y. | SAE Technical Papers | 1991