DDT with the Linear Eddy Model
Brian Maxwell just published his results of DDT modelling with the Linear Eddy Model, where compressible dynamics of reactive gases and turbulence are explicitly taken into account. Nicely done! Here, a detonation passes through a perforated plate, generating a turbulent flame headed by a shock. For a while, the reaction front propagates as a CJ deflagration while getting ready for transition. Pressure fronts build up internally, favouring local auto-ignition events within the turbulent structure. We now have a tool to predict DDT in turbulent flames where compressible gas dynamics play an important role (always!).