Professor Choongsik Bae

Prof. Bae serves as a professor at the Korea Advanced Institute of Science and Technology (KAIST) and leads the Future Transport Power Lab, since 1998. He obtained his B.S. and M.S. in Aerospace Engineering from Seoul National University, Korea, and Ph.D. in Mechanical Engineering from Imperial College London, UK. He has served as the President of ILASS-Korea (Institute for Liquid Atomization and Spray Systems – Korea), and as the Vice-President of KSAE (Korean Society of Automotive Engineers), being elected as a member of NAEK (The National Academy of Engineering of Korea). He is also serving as an Advisor of Climate Ambassador of Korea.

Several outstanding awards, such as the SAE ‘Arch T. Colwell Merit Award’ in 1997, SAE ‘Harry Horning Award’ in 2006, the SAE Fellow obtainment in 2012, Presidential Commendation in 2022, and Service Award of National Assembly in 2024 distinguish what he achieved. Prof. Bae is currently working on the research for transport carbon-neutral power for transport including hydrogen combustion, and e-fuel engine, mobile carbon capture, etc.

Abstract:

Turbulent flow in reciprocation engines plays an important role in determining the engine's combustion performance. Turbulence is enhanced by various flow formations, i.e. swirl and tumble, affected by optimal or innovative design such as the shape of the combustion chamber and the geometry of the intake system. Enhancing turbulence can lead to faster combustion resulting in reduced exhaust emissions, improved fuel economy, and an extended lean operating limit for engines. This presentation describes the characteristics of turbulent flows in direct-injection spark-ignition (DISI) engines and various methods of turbulence enhancement. Measurement of turbulent flows in DISI engines will be introduced to explain the relationship between turbulent flow intensity and the combustion process.