On the Theory and Modelling of Flame Acceleration and Deflagration-to-Detonation Transition

2017 ◽  
pp. 569-583
Author(s):  
V’yacheslav B. Akkerman
Keyword(s):  
Flame Acceleration ◽  
Deflagration To Detonation Transition ◽  
Detonation Transition

scholarly journals Effects of jet in crossflow on flame acceleration and deflagration to detonation transition in methane–oxygen mixture

2018 ◽  
Vol 198 ◽  
pp. 69-80 ◽  
Author(s):  
Han Peng ◽  
Yue Huang ◽  
Ralf Deiterding ◽  
Zhenye Luan ◽  
Fei Xing ◽  
...  
Keyword(s):  
Oxygen Mixture ◽  
Flame Acceleration ◽  
Jet In Crossflow ◽  
Deflagration To Detonation Transition ◽  
Detonation Transition

scholarly journals Mechanisms and Occurrence of Detonations in Vapor Cloud Explosions

2019 ◽  
Author(s):  
Elaine Oran
Keyword(s):  
Puerto Rico ◽  
Large Scale ◽  
Ignition Source ◽  
Major Conclusion ◽  
Flame Acceleration ◽  
Deflagration To Detonation Transition ◽  
Vapor Cloud ◽  
Detonation Transition ◽  
Accidental Releases ◽  
Large Scale Tests

Not all accidental releases of flammable gases and vapors create explosions. Most releases do not find an ignition source, and of those that do ignite, most of them result in deflagrations that generate low or moderate overpressures. Under some circumstances, however, it is possible for deflagration-to-detonation transition (DDT) to occur, and this can be followed by a propagating detonation that quickly consumes the remaining detonable cloud. In a detonable cloud, a detonation creates the worst accident that can happen. Because detonation overpressures are much higher than those in a deflagration and continue through the entire detonable cloud, the damage from a DDT event is more severe.This paper first provides a brief summary of our knowledge to date of the fundamental mechanisms of flame acceleration and DDT. This information is then contrasted to and combined with evidence of detonations (detonation markers) obtained from large-scale tests and actual large vapor cloud explosions (VCEs), including events at Buncefield (UK), Jaipur (India), CAPECO (Puerto Rico), and Port Hudson (US). The major conclusion from this review is that detonations did occur in prior VCEs in at least part of the VCE accidents. Finally, actions are suggested that could be taken to minimize detonation hazards.

scholarly journals Gas Compression Moderates Flame Acceleration in Deflagration-to-Detonation Transition

2012 ◽  
Vol 184 (7-8) ◽  
pp. 1066-1079 ◽  
Author(s):  
Vitaly Bychkov ◽  
Damir Valiev ◽  
V'yacheslav Akkerman ◽  
Chung K. Law
Keyword(s):  
Flame Acceleration ◽  
Deflagration To Detonation Transition ◽  
Gas Compression ◽  
Detonation Transition
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