One of the topical scientific and technical problems concerning combustion processes is to study flame acceleration and deceleration phenomena. These effects play a great role in deflagration-to-detonation transition (DDT) and can be utilized for combustion regimes control in engines or other technical power equipment (speed control, products outlet control etc.). One of the leading roles in flame acceleration belongs to hydrodynamic factors . A large amount of publications concern turbulence role in flame evolution (e.g. [2, 3]), however there are still no clear theory of turbulent combustion. Combined influence of flame instability and acoustic perturbations creates sufficiently complex evolution of the flame front propagation through the channel that can trigger DDT . Detonation formation and propagation behavior depends on the scale of gas volume where detonation occurs. One can find data for wide range of detonation volumes from sub-cell  to 103 cells  sizes.
KeywordsTurbulent Combustion Combustion Regime Acoustic Perturbation Luminosity Peak Ignition Zone
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