The chemical reaction and cold wall effects in hypersonic reacting turbulent boundary layers (HRTBLs) cause the failure of the existing wall function method. Therefore, this paper proposes an improved wall function method to simulate skin friction c f and wall heat flux q w in HRTBLs accurately and efficiently. Firstly, the temperature–velocity relation is extended to a generalized enthalpy–velocity relation to comprehensively involve the chemical reaction and cold wall effects. Then, a new unified velocity law of the wall for the inner layer of HRTBLs is theoretically derived. Finally, an improved wall function method is designed with the new laws of the wall. Numerical experiments of typical HRTBLs show that, compared with the existing wall function method, the improved wall function method can significantly reduce the errors of c f and q w from 8.0% and 10.2% to 0.4% and 0.5%, respectively, when the near-wall grids are relaxed to the viscous sublayer, while from 11.0% and 15.3% to 1.2% and 5.8%, respectively, when the near-wall grids are further relaxed to the logarithmic layer, bringing 2.7 and 15 times enhancement of the simulation efficiency. Moreover, by introducing the reference point, the improved wall function method removes the boundary layer edge quantities while ensuring accurate results.


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    Titel :

    Improved Wall Function Method for Hypersonic Reacting Turbulent Boundary Layers


    Beteiligte:
    Li, Bingliang (Autor:in) / Gao, Zhenxun (Autor:in) / Mo, Fan (Autor:in) / Jiang, Chongwen (Autor:in)

    Erschienen in:

    AIAA Journal ; 63 , 1 ; 55-71


    Erscheinungsdatum :

    01.01.2025




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    DNS of Reacting Hypersonic Turbulent Boundary Layers

    Martin, M. P. / Weirs, V. G. / Olejniczak, D. et al. | British Library Conference Proceedings | 1998


    DNS of reacting hypersonic turbulent boundary layers

    Martin, M. / Weirs, V. / Olejniczak, Debra et al. | AIAA | 1998