LES of flame acceleration and DDT in hydrogen–air mixture using artificially thickened flame approach and detailed chemical kinetics

High resolution numerical simulation of triple point collision and origin of unburned gas pockets in turbulent detonations

“…This type of turbulence (shock-flame interaction) has also been observed in DDT phenomena (e.g. [52,[78][79][80][81][82][83][84][85]). Oran and Gamezo [84] showed that the computations in two dimensions were in qualitative agreement with those in three dimensions and experiments.…”

The effect of concentration gradients on deflagration-to-detonation transition in a rectangular channel with and without obstructions – A numerical study

“…In the present simulations, the half-reaction length (HRL) varies across the domain due to inhomogeneous mixture composition, between 30 and 50 grid points per HRL (1/HRL). This resolution exceeds the resolution of previous 2-D DDT simulations in the literature [17][18][19][20]. Sharpe [18] observed that the results for grid resolutions above 20 1/HRL are sufficient.…”

Adaptive mesh refinement based simulations of three-dimensional detonation combustion in supersonic combustible mixtures with a detailed reaction model

“…Although diffusion and hydrodynamic instabilities [68][69][70][71] are very important for the evolution of irregular detonations, very recently numerical investigations [72][73][74] showed that from the comparison of the results of Euler and Navier-Stokes equations, diffusion effects have no role in regular detonations due to the absence of hydrodynamic instabilities.…”