Stabilization and Blowout of Gaseous- and Spray-Jet Flames
Final rept. 1 Jul 2000-30 Jun 2004
NORTH CAROLINA STATE UNIV AT RALEIGH DEPT OF MECHANICAL AND AEROSPACE ENGINEERING
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This Final Report surveys our results under ARO support in the areas of Spray and Gas-Flame Research. Flame liftoff blowout is witnessed in spray combustion systems encountered in practical devices. Understanding the governing parameters for flame structure and stability is of fundamental as well as practical importance. Our group has continued an experimental effort in this area of flame stabilization, propagation and extinction in spray flames interacting with an air co-flow. Ph.D. student Steve Marley has been the core Ph.D student for the spray flame experimental work. Recently, OH-PLIF measurements have also been performed in our laboratory to visualize the single and double flame structures in such spray flames, along with high-speed visualization of the combustion process of single and double-flame structures. Experiments have also been performed in our laboratory to examine the temporal nature of the spray flameflow interaction. Much of this work has been presented at conferences and is appearing in the literature in journals. A continuing focus is the effect of entrained air on flame stability and local extinction. These findings are anticipated to be utilized in modeling spray combustion and optimizing spray flame stability parameters.
- Combustion and Ignition