Propagation and Morphology of Premixed Flames in Obstructed Channels under Atmospheric and Supercritical Conditions

Abstract

The understanding of the morphology and propagation of premixed flames in channels is vital for the design and development of efficient propulsion systems requiring high heat release, such as pulse-detonation engines, and for resolving accidental fire in industrial processes. In this dissertation, extensive computational simulations of premixed flames in channels with rectangular and cylindrical cross sections, with closely packed obstacles are carried out. The goal is to provide insights into flame propagation under various conditions, which would be invaluable to the development of next-generation energy and propulsion systems as well as fire safety of industrial processes.