Vortex Rings and Jets

Dr. Simon C. M. YU BEng(Hons) ACGI PhD DIC CEng FIMechE Associate Professor and Head, Division of Aerospace Engineering Dr. Yu obtained his BEng(Hons) ACGI and PhD DIC (under the late Prof. J. H. Whitelaw FRS) from the Department of Mechanical Engineering, Imperial College, London in 1987 and 1991 respectively. He joined the School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore in November 1991 as lecturer. He has published more than 100 referred journal papers in different areas of fluid mechanics and had held several administrative appointments at the university; Principal Staff Officer (President Office), University Council Member, Vice-Dean (Office of Admissions). He is currently Head of the Aerospace Engineering Division. He was appointed as the trainer for the Holistic Gas Turbine for Rolls Royce Aeroengine Singapore in 2009. He has been a Chartered Mechanical Engineer (CEng) since 1997 and was elected as Fellow of The Institution of Mechanical Engineers (FIMechE) U.K. in 2008. TH New obtained his B.Eng (Hons) and PhD degrees from the National University of Singapore in 1998 and 2004 respectively.  Between 2001 and 2005, he was with Temasek Laboratories at the National University of Singapore, where he investigated flow control problems such as jet-mixing enhancement and control strategies, drag reduction and ogive cylinder flows.  It was then that he developed an interest in geometrically modified jet nozzles.  From 2005 to 2010, he joined the University of Liverpool, United Kingdom, where he investigated the flow physics of single and coaxial nozzle jet flows with trailing-edge modifications.  For his research in jet control techniques, he was awarded competitive research grants from the UK Engineering and Physical Science Research Council and The Royal Society.  He returned to Singapore to join the Division of Aerospace Engineering, Nanyang Technological University in 2010.  He hassince being awarded several research grants in the areas of UAV aerodynamics, particle-laden flows and jet control.  His active role in fluid-related research has seen key journal papers published in Journal of Fluid Mechanics; Physics of Fluids; Experiments in Fluids and AIAA Journal, as well as serving as a regular reviewer for these research journals.  His current research interests include jet-in-crossflows, geometrically modified nozzles, jet vortex dynamics and UAV aerodynamics.

Starting Jets and Vortex Ring Pinch-off.- The Impact of a Vortex Ring on Porous Surfaces – A Review.- Experimental Studies of the Near-field Spatio-temporal Evolution of Zero-net-mass-flux (ZNMF) Jets.- Simulation and Modeling of Synthetic Jets.- Dynamics of Jets Issuing from Trailing-edge Modified Nozzles.- Impinging Jets.