A bluff-body, known as a flame holder, has been employed as one of flame stabilization schemes, including backward-facing step and swirling flow. While the bluff-body has an advantage of improving flame stability by creating a recirculation zone behind the body, the bluff-body itself also causes the instability into the anchored flames. Since many physical and chemical parameters involved, understanding the physical mechanisms of combustion stability behind the bluff-body, such as where the flame is stable or extinguishing and the unstable flame dynamics behind the bluff-body, is necessary to predict the combustion stability under wide operating conditions.
One of key scientific questions to answer is what causes the blow-off? Is it flame extinction problem or the failure of ignition? our goal of this study is to fully understand the physical mechanism of flame stabilization and blow-off dynamics by investigating its dynamics and systematic analysis.
Clean Combustion Research Center (CCRC)
Mechanical Engineering (ME)