Numerical simulation of flame acceleration and deflagration-to-detonation transition of ethylene in channels

Numerical simulation of detonation failure and re-initiation in bifurcated tubes

“…One-step Arrhenius kinetics have previously been widely tested and used to simulate detonations [8,11,16,31,32] DDT [20,21,29,30], detonation failure and re-initiation [8,11,16]. Previous studies show, although one-step Arrhenius kinetics are simplified, if carefully designed and tested, they can reproduce reasonably good predictions of these phenomenon.…”

Large Eddy Simulation of Premixed CH4/Air Deflagration in a Duct with Obstacles at Different Heights

“…Oh et al studied the explosion characteristics of gas in pipelines with built-in obstacles by changing the shape, size, and gas concentration of obstacles. Wang et al studied the characteristics of ethylene deflagration to detonation in the pipeline by changing the width of the pipeline through calculation. Di Sarli et al.…”

“…Oh et al 16 studied the explosion characteristics of gas in pipelines with built-in obstacles by changing the shape, size, and gas concentration of obstacles. Wang et al 19 studied the characteristics of ethylene deflagration to detonation in the pipeline by changing the width of the pipeline through calculation. Di Sarli et al 20 used particle image velocimetry to capture the vortex structure behind the obstacle and pointed out that the interaction between the flame and the vortex is the main reason for the acceleration of the flame and the change in the flame shape.…”

Effects of inert gas jet on the transition from deflagration to detonation in a stoichiometric methane-oxygen mixture

“…Alternatively, a detonation can be formed by indirect way, referring to the deflagration-to-detonation transition (DDT) [22,23]. It requires a weak ignition source and DDT is achieved after different stages of flame acceleration from slow burning to high speed turbulent deflagration, and eventually the detonation onset for various physical mechanisms involved [24][25][26].…”