To reduce the numerical dissipation in turbulence modeling while maintaining the numerical stability around flow discontinuities in supersonic flowfield, a low-dissipative compressible solver is developed for large-eddy simulation within the OpenFOAM framework. To achieve the aforementioned goals, the low-dissipative solver adopts the hybrid scheme approach through combining the dissipative Kurganov–Tadmor scheme with the nondissipative central scheme via a shock sensor. In the construction of the central scheme, a robust skew-symmetric form of the convective term is adopted to preserve the local kinetic energy without adding an explicit dissipative term. Another feature of the low-dissipative solver is the implementation of an optimal explicit strong stability-preserving linear third-order total variation diminishing Runge–Kutta method for the temporal discretization. Numerical tests for a series of canonical flow problems are carried out to validate the solver’s good performance in the flowfield either with strong discontinuities or with continuous spectrum characteristics. Large-eddy simulation of a scramjet combustor with supersonic airstream passing over the flame holder is conducted to validate the low-dissipative solver’s reliability in a realistic flow with the complex interaction of shock discontinuities and turbulence.


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    Titel :

    Low-Dissipative Hybrid Compressible Solver Designed for Large-Eddy Simulation of Supersonic Turbulent Flows


    Beteiligte:
    Lee, Yachao (Autor:in) / Yao, Wei (Autor:in) / Fan, Xuejun (Autor:in)

    Erschienen in:

    AIAA Journal ; 56 , 8 ; 3086-3096


    Erscheinungsdatum :

    01.08.2018




    Medientyp :

    Aufsatz (Konferenz) , Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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