The role of compression waves in flame acceleration and transition to detonation inside confined volumes

30th International Conference on Interaction of Intense Energy Fluxes with Matter

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

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

125412, Russia^1

关键词: Combustible mixture;    Compression waves;    Confined volume;    Different stages;    Flame accelerations;    Flame dynamics;    Structure evolution;    Temperature and pressures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/653/1/012062/pdf
DOI  :  10.1088/1742-6596/653/1/012062

来源: IOP

【 摘 要 】

Features of the unsteady flames propagating in channels filled with gaseous combustible mixtures are studied numerically. The analysis is based on the model treating the flame as a moving energy source. It is shown that the crucial role in flame dynamics and its structure evolution belongs to the compression waves emitted by non-steady flame itself. The compression waves establish flow pattern, temperature and pressure fields near the flame front, which in turn determine the features of flame evolution on the different stages of its propagation.