Jinjun Wang, Ph.D.
Beijing University of Aeronautics & Astronautics (BUAA)
Thursday, January 15, 2015, 2:00pm
Science & Engineering Hall
800 22nd ST NW
Room B1270
Washington, District Of Columbia 20052
Hosted by: Dr. Michael Plesniak ([email protected])
Abstract: The influence of a circular cylinder wake on a zero-pressure-gradient flat plate laminar boundary layer is experimentally investigated using hydrogen bubble visualization and particle image velocimetry technique. The effects of the cylinder gap ratio G/D (the ratio between the gap height and the cylinder diameter) on the cylinder-wake/boundary-layer interaction are examined. Then the flow structures and statistics of two typical cases, G/D=1.0 and G/D=2.0 (for the strong interaction scenario and the weak interaction scenario, respectively), are thoroughly investigated. The boundary layer bypass transition control using synthetic jet at the rear stagnation point of the circular cylinder is explored, and an attempt is made to explain the mechanism of the control effect.
Biographical Sketch: Jinjun Wang, PhD, Prof. of Fluid Mechanics, Beijing University of Aeronautics and Astronautics (BUAA). He is the Director of Fluid Mechanics Institute at BUAA, and the Director of Fluid Mechanics Key Laboratory of Education Ministry, China. He serves as Associate Editor of Journal of Aircraft and Advisory Committee Member of Experiments in Fluids. He published about 200 papers in archive Journals in boundary layer transition, turbulent coherent structure, vortex flow and flow control.