doi:10.3850/978-981-08-7724-8_02-01

ABSTRACT

This paper uses selected results from numerical simulations, theoretical analyses, and experiments to show how flame acceleration and possible deflagration-to-detonation transition (DDT) are affected by increasing spatial scales. The approach is to consider hydrogen-air flames in small channels (order of centimeters) first, then methane-air in larger channels (order of meters), and finally thermonuclear flames and detonations in supernovae (order of thousands of kilometers). Underlying themes are: What events lead to DDT, and how does it occur? What are the effects of scale? When can we expect to be able to predict flame acceleration and DDT?.

Keywords: Deflagration, Detonation, Deflagration-to-detonation transition.

© 2011 CPD Unit, University of Leeds