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. 

• Y.J. Kim, B.J. Lee, H.G. Im, “Hydrodynamic and Chemical Scaling for Blow-off Dynamics of Lean Premixed Flames Stabilized on a Meso-scale Bluff-body,” Proceedings of The Combustion Institute, Vol. 37, Nov. 2, pp.1831-1841, 2019.
• Y.J. Kim, B.J. Lee, H.G. Im, “Dynamics of Lean Premixed Flames Stabilized on a Meso-scale Bluff-body in an Unconfined Flow Field,” Mathematical Modelling of Natural Phenomena, Vol. 13, Nov. 6, pp.48-63, 2018.
• Y.J. Kim, C.B. Oh, O. Fujita, “Prediction Performance of Chemical Mechanisms for Numerical Simulation of Methane Jet MILD Combustion,” Advances in Mechanical Engineering, Vol. 5, pp.138729, 2013. 

• Ph.D., Mechanical Engineering, KAUST, Thuwal, Saudi Arabia, 2015 - present
• M.S., Safety Engineering, Pukyong National University, Busan, South Korea, 2014
• B.S., Safety Engineering, Pukyong National University, Busan, South Korea, 2012

• ​Clean Combustion Research Center (CCRC)

• Mechanical Engineering (ME)