02.3 - Basic Fluid Dynamics and Flow Control
EFFECT OF A 3D INDENTATION ON BOUNDARY LAYER INSTABILITY
H. Xu¹, S. Mughal¹, E.R. Gowree, Centre of Aeronautics,City University London, United Kingdom; S.-J. Sherwin, Department of Aeronautics, Imperial College London, United Kingdom; ¹Department of Mathematics,Imperial College London, United Kingdom
In the boundary layer over an engine nacelle, the dominant mode is a Tollmien-Schlichting wave which is a viscous instability. These modes are receptive to surface roughness interacting with free stream disturbances and/or surface vibrations. The influence of a 3D surface depression on the transitional boundary layer has been investigated numerically by PSE.