A full Reynolds-stress closure that is capable of describing the flow all the way to the wall is formulated. The closure is based on the conventional high Reynolds number form of the redistribution model, the inclusion of molecular diffusion, and a modified dissipation model to account for viscous effects near a wall. Two dissipation models are investigated along with two gradient diffusion and two redistribution models. Their respective effects on the calculated flow properties are assessed by comparing them with the data of fully developed turbulent flows and a developing pipe flow with wall transpiration. The near-wall behavior is very well predicted; however, the wall correction to the redistribution modeling is found to have little effect on the calculated results. The overall behavior of the fully developed turbulent flows is best described by a nonisotropic gradient diffusion model, a return-to-isotropy redistribution model, and a dissipation model that accounts for viscous behavior near a wall. This same closure also gives the best prediction of the axial pressure drop behavior along a pipe with a uniform wall suction. Furthermore, the near-wall behavior of such a flow is very well predicted by this closure.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Low Reynolds number modeling of turbulent flows with and without wall transpiration


    Beteiligte:
    So, Ronald M. C. (Autor:in) / Yoo, Geun Jong (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.12.1987



    Medientyp :

    Sonstige


    Format :

    Keine Angabe


    Sprache :

    Englisch





    Realizable Dynamic LES of High Reynolds Number Turbulent Wall Bounded Flows

    Ahmadi, Ghazaleh / Kassem, Hassan / Mokhtarpoor, Reza et al. | AIAA | 2019



    Low Reynolds Number Turbulent Flows around a Dynamically Shaped Airfoil

    Lian, Y. / Steen, J. / Trygg-Wilander, M. et al. | British Library Conference Proceedings | 2001


    Low Reynolds number turbulent flows around a dynamically shaped airfoil

    Lian, Yongsheng / Steen, Jonas / Trygg-Wilander, Marcus et al. | AIAA | 2001