Keynote Speaker 7 : Professor Dr. Kwing So-Choi
Department of Mechanical, Materials and Manufacturing Engineering
University of Nottingham
Nottingham NG7 2RD, UK
Tel: +44 (0)115 951 3792
New strategies in leading-edge flow separation control using plasma actuators
Flow separation control has been carried out using DBD (Dielectric-Barrier-Discharge) plasma actuators, which were placed near the leading edge of an NACA 0012 aerofoil. Here, pulsed wall-normal jets were issued against the flow by injecting the jet vorticity into the separated region, reattaching the separated flow with a very small jet momentum coefficient of less than 0.0005%. In the lecture, the mechanism of flow separation control using plasma actuators will be discussed by showing how the vortices created by plasma jets interact with the separated flow based on time-resolved PIV (Particle Image Velocimetry) measurements.
1978 Japan Society of Mechanical Engineers (Member)
1983 American Physical Society (Member)
1983 American Institute of Aeronautics and Astronautics (Associate Fellow)
1984 SIGMA XI Scientific Research Society (Member)
1992 New York Academy of Sciences (Member)
1996 Chartered Management Institute (Member)
2006 The Royal Aeronautical Society (Fellow)
Leverhulme Trust Research Fellowship Award (1998)
Japanese Government Research Award for Foreign Specialist (1999, 2000)
Visiting Fellow/Professor, Beijing University of Aeronautics and Astronautics
(2003, 2005, 2007, 2008)
Winner, Gallery of Fluid Motion, American Physical Society Meeting (2009)
2005 DSc-UNIVERSITY OF NOTTINGHAM, UK
1995 MBA (Strategic Management) BRUNEL UNIVERSITY, Middlesex, UK in conjunction with HENLEY MANAGEMENT COLLEGE
1995-CEng The Engineering Council, UK
1983 PhD (Aerospace Engineering), Sibley School of Mechanical and Aerospace Engineering, CORNELL UNIVERSITY, New York, USA
1978 MSc (Mechanical Engineering), Mechanical Engineering Department, TOTTORI UNIVERSITY, Tottori, JAPAN
1976 BSc (Mechanical Engineering), Mechanical Engineering Department, TOTTORI UNIVERSITY, Tottori, JAPAN
Research projects over the last 5 years
 PLASMAERO, FP-7, EU grant, €210,000 2009-2013.
 ICECOAT, Clean Sky 1, EU grant, €400,000, 2013-2016.
 BUTERFLI, FP-7, EU grant, €230,000, 2014-2017.
 GAINS, Clean Sky 2, EU grant, €1,050,000, 2016-2022.
 Quiet Aerofoils of the Next Generation, EPSRC grant, £276,000, 2016-2018.
 Deterministic Turbulence, EPSRC grant, £632,000, 2015-2019.
Some selected publications
 Jukes, T.N. and Choi, K.-S., “Dielectric-Barrier-Discharge Vortex Generators: Characterization and Optimization for Flow Separation Control”, Experiments in Fluids, 52, 329-345, 2012.
 Feng, L.-H., Jukes, T., Choi, K.-S. and Wang, J.-J., “Flow Control over a NACA 0012, Airfoil using Dielectric-Barrier-Discharge Plasma Actuator with a Gurney Flap”, Experiments in Fluids, 52(6), 1533-1546, 2012.
 Whalley, R. and Choi, K.-S., “The Starting Vortex in Quiescent Air induced by Dielectric-Barrier-Discharge Plasma”, Journal of Fluid Mechanics, 703, 192-203, 2012.
 Wang, J.-J., Choi, K.-S., Feng, L.-H. and Jukes, T.N., “Recent Developments in DBD Plasma Flow Control”, Progress in Aerospace Sciences, 62, 52-78, 2013.
 Wang, J., Pan, C., Choi, K.-S., Gao, L. and Lian, Q.-X., “Formation, Growth and Instability of Vortex Pairs in an Axisymmetric Stagnation Flow”, Journal of Fluid Mechanics, 725, 681-708, 2013.
 Jukes, T.N. and Choi, K.-S., “On the Formation of Streamwise Vortices by Plasma Vortex Generators”, Journal of Fluid Mechanics, 733, 370-393, 2013.
 Whalley, R. and Choi, K.-S., “Turbulent Boundary-layer Control with Plasma Spanwise Travelling Waves”, Experiments in Fluids, 55, 1796, 2014.
 Choi, K.-S., Jukes, T. N., Whalley, R. D., Feng, L.-H., Wang, J.-J., Matsunuma, T. and Segawa, T., “Plasma Virtual Actuators for Flow Control”, Journal of Flow Control, Measurements & Visualization, 3, 22-34, 2015.
 Feng, L.-H., Choi, K.-S. and Wang, J.-J., “Flow Control over an Airfoil using Gurney Flaps”, Journal of Fluid Mechanics, 767, 595-626, 2015.
 Liu, J., Janjua, Z.A., Roe, M., Xu, F., Turnbull, B., Choi, K.-S. and Hou, X., “Super- Hydrophobic/Icephobic Coatings Based on Silica Nanoparticles Modified by Self- Assembled Monolayers”, Nanomaterials, 6(12), 232, 2016.
 Janjua, Z.A., Turnbull, B., Choy, K.-L., Pandis, C., Liu, J., Hou, X. and Choi, K.-S., “Performance and Durability Tests of Smart Icephobic Coatings to reduce Ice Adhesion”, Applied Surface Science, 407, 555-564, 2017.
 Janjua, Z.A., Turnbull, B., Hibberd, S. and Choi, K.-S., “Mixed Ice Accretion on Aircraft Wings”, Physics of Fluids, 30, 027101, 2018.