-From burning to exploding: modeling the deflagration-to-detonation transition (DDT)-
In this paper we used probably the most detailed high resolution simulations yet performed to reveal and to explain mechanism of DDT. In contrast to previous studies which used a simplified single-step chemical reaction model we used a real chemical mechanism and were able to explain how flame accelerates and how the transition to detonation occurs. This phenomenon is known as the transition from a slow combustion (deflagration) to detonation or deflagration-to-detonation transition (DDT). Over the years DDT was one of the least understood phenomena in combustion science. Significant efforts have been devoted to understand the nature of the flame acceleration and mechanism of DDT because of its importance for industrial and the nuclear industry safety. If DDT were to occur the integrity of the containment could be jeopardized. Unfortunately, the recent accident at the Fukushima Daiichi Nuclear Power Plant has shown how important it is a correct understanding of the DDT nature and origin.
