Role of numerical scheme choice on the results of mathematical modeling of combustion and detonation

31st International Conference on Equations of State for Matter

Yakovenko, I.S.^1 ; Kiverin, A.D.^1 ; Pinevich, S.G.^1 ; Ivanov, M.F.^1

Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13 Bldg 2, Moscow

125412, Russia^1

关键词: Combustion model;    Detonation initiation;    Equation of state;    Euler-Lagrange method;    Numerical approaches;    Numerical scheme;    Physical nature;    Unsteady gas dynamics;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012093/pdf
DOI  :  10.1088/1742-6596/774/1/012093

来源: IOP

【 摘 要 】

The present study discusses capabilities of dissipation-free CABARET numerical method application to unsteady reactive gasdynamic flows modeling. In framework of present research the method was adopted for reactive flows governed by real gas equation of state and applied for several typical problems of unsteady gas dynamics and combustion modeling such as ignition and detonation initiation by localized energy sources. Solutions were thoroughly analyzed and compared with that derived by using of the modified Euler-Lagrange method of "coarse" particles. Obtained results allowed us to distinguish range of phenomena where artificial effects of numerical approach may counterfeit their physical nature and to develop guidelines for numerical approach selection appropriate for unsteady reactive gasdynamic flows numerical modeling.