The Direct Numerical Simulation of decaying isotropic turbulence is performed with nonequilibrium effects. Oxygen is used as the test gas in the simulations. The individual and combined effects of vibrational relaxation and chemical reactions are studied by considering four different simulation cases. The time evolution of mean thermodynamic properties and turbulent statistics is analyzed. Budgets for turbulent kinetic energy and mean internal energy are computed to explain the dynamics of energy exchange associated with different nonequilibrium effects. The time evolution of enstrophy and turbulent length scales is also studied. The dissociation reaction is found to significantly affect the evolution of mean thermodynamic quantities as well as turbulence. Vibrational relaxation is found to significantly affect the flow in the presence of chemical reactions. The effects of changing the initial conditions on the resulting flowfield are analyzed.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Direct Numerical Simulation of Nonequilibrium Effects on Decaying Isotropic Turbulence


    Beteiligte:
    Kerkar, Pawan P. (Autor:in) / Ghosh, Shankar (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2024-01-19


    Format / Umfang :

    14 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Detached-Eddy Simulation on Decaying Homogeneous Isotropic Turbulence

    Hansen, Andreas / Sorensen, Niels / Johansen, Jeppe et al. | AIAA | 2005


    Direct and Large-Eddy Simulation of Decaying and Forced Isotropic Turbulence Using Lattice Boltzmann Method

    Orphee, Juan / Gungor, Ayse / Sanchez-Rocha, Martin et al. | AIAA | 2006


    Direct Numerical Simulation of Shock-wave/Isotropic Turbulence Interaction

    Grube, Nathan / Taylor, Ellen / Martin, Pino | AIAA | 2009


    Effect of Thermal Non-Equilibrium on Decaying Isotropic Turbulence

    Neville, A. / Nompelis, I. / Subbareddy, P. et al. | British Library Conference Proceedings | 2014