In this paper, the direct numerical simulation is applied to investigate the compressible channel flow with Re=3000, 6800, 10800, 21000 and Mach number Ma=0.8.The Reynolds number effect on the statistical characteristics of the turbulence in a compressible channel is studied, as well. It is found that the high Reynolds number effect in incompressible flow also exists in compressible flow when the Reynolds number increases to Re=21000 (Reτ=1040), but some statistical results need to be corrected when Ma=0.8. For example, the Von Kamen number in the Logarithm Law in the turbulent boundary layer is suggested to be modified to 0.417 when Ma=0.8. Unlike the term of generation of turbulent kinetic energy is balanced with the term of dissipation in incompressible turbulence, the generation term of the turbulent kinetic energy in the logarithmic region of a compressible turbulence is approximately 1.2 times than that of the dissipation term. The phenomenon of "scale separation" in incompressible turbulence also exists in the compressible turbulent boundary layer, but the location of large scale in the outer region is farther from the wall and the length of streamwise scale is shorter in the pre-multiplied power spectra of the streamwise velocity fluctuation.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    The Effect of Reynolds Number in Compressible Channel Flow


    Beteiligte:
    Ma, Rui (Autor:in) / Gao, Zheng-Hong (Autor:in) / Chen, Shu-Sheng (Autor:in)


    Erscheinungsdatum :

    20.07.2022


    Format / Umfang :

    4051912 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Reynolds Number Dependency in Compressible Crossflow-Jet Problems

    Araya, Guillermo / Lagares, Christian J. / Jansen, Kenneth | AIAA | 2025



    Nonlinear Lift on a Triangular Airfoil in Low-Reynolds-Number Compressible Flow

    Munday, Phillip M. / Taira, Kunihiko / Suwa, Tetsuya et al. | AIAA | 2015


    Stability of the Low Reynolds Number Compressible Flow Past a NACA0012 Airfoil

    Victoria Rolandi, Laura / Jardin, Thierry / Fontane, Jérôme et al. | AIAA | 2022