Yu Jeong Kim

PhD Students

Ph.D. Student

Current

Biography

Yu Jeong Kim received her bachelor and master degrees in safety engineering at Pukyong National University (PKNU) in the Republic of Korea in 2012 and 2014, respectively, and then joined clean combustion research center (CCRC) at King Abdullah University of Science and Technology (KAUST) in January 2015 as a Ph.D. student at Computational Reacting Flow Laboratory (CRFL) lead by Prof. Hong Im. Her research has been focusing on direct numerical simulations of flame/flow dynamics behind a bluff-body in a channel configuration. Her research interests are high fidelity computational modeling of flame/flow dynamics and ignition and extinction characteristics in the combustion system and high-performance computing (performance analysis and benchmarking)

Research Interest

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. 

Selected Publications

  • 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. 

Education

  • 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

KAUST Affiliations

  • ​Clean Combustion Research Center (CCRC)

  • Mechanical Engineering (ME)

Research Interests Keywords

Fuels and combustion Ignition and extinction phenomena DNS/LES of turbulent reacting flows