519.63 Mathematical modeling of detonation wave initiation using one-stage and detailed kinetics of chemical reactions

Lopato A. I. (Institute for Computer Aided Design of the Russian Academy of Sciences), Kravchenko A. N. (Moscow Institute of Physics and Technology)

MATHEMATICAL MODELING, DETONATION WAVE, ONE-STAGE KINETICS, PETERSEN-HANSON KINETICS


doi: 10.18698/2309-3684-2025-2-3749


The work is devoted to the numerical study of detonation initiation in a flat channel during shock wave reflection from the profiled end wall of the channel. The geometry of the end wall consists of a semi-ellipse and two sections of a flat wall. The mathematical model is based on the two-dimensional system of Euler equations supplemented by the kinetics of combustion of the hydrogen-oxygen mixture at low pressures. The application of both global one-stage and detailed kinetics is considered. The Petersen-Hanson kinetics is used as a detailed kinetics. Calculations are carried out using the finite volume method. Unstructured triangular computational grids are applied. The numerical method of the second approximation order is used. The process of reflection of the incident shock wave from the end wall and transition of the shock wave into a detonation wave is described. The results of the detonation initiation process obtained using two different types of mixture combustion kinetics are compared.


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Лопато А.И., Кравченко А.Н. Математическое моделирование инициирования детонационной волны с использованием одностадийной и детальной кинетики химических реакций. Математическое моделирование и численные методы, 2025, № 2, с. 37–49.


Работа А.И. Лопато выполнена в рамках госзадания ИАП РАН.


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