Print Email Facebook Twitter Tomographic-PIV investigation of the 3D Separation behaviour of a micro-ramp controlled SWBLI Title Tomographic-PIV investigation of the 3D Separation behaviour of a micro-ramp controlled SWBLI Author Nayak, K. (TU Delft Structural Integrity & Composites) Giepman, R.H.M. Schrijer, F.F.J. (TU Delft Aerodynamics) van Oudheusden, B.W. (TU Delft Aerodynamics) Date 2017 Abstract Micro-ramp vortex generators (or micro-ramps) have gained popularity as promising alternatives to boundary layer bleed for high speed flow-control applications. Micro-ramps generate a counter-rotating vortex pair which leads to a more separation resistant boundary layer. Furthermore, they modulate the size of the shock induced separation bubble along the span such that individual cells of three-dimensional separation are formed.In the current study, the highly three-dimensional nature of such a micro-ramp controlled SWBLI is visualized by using tomographic-PIV. The 3D mean flow field of the interaction is presented, while the 3D separation behaviour is further characterized by the separation probability of the interaction Psep at different wall-parallel planes. The largest reduction in Psep occurs along the micro-ramp centreline where separation is basically eliminated. Additionally, it is found that the total volume of separation is decreased by 70% when compared to an uncontrolled SWBLI. To reference this document use: http://resolver.tudelft.nl/uuid:fadb1104-5f41-4834-8105-c7ac3891b3ce Source 52nd 3AF International Conference on Applied Aerodynamics: 27 – 29 March 2017, Lyon – France Event 52nd 3AF International Conference on Applied Aerodynamics, 2017-03-27 → 2017-03-29, Lyon, France Part of collection Institutional Repository Document type conference paper Rights © 2017 K. Nayak, R.H.M. Giepman, F.F.J. Schrijer, B.W. van Oudheusden Files PDF 3AF_S01B_S_NAYAK_P.pdf 1.52 MB Close viewer /islandora/object/uuid:fadb1104-5f41-4834-8105-c7ac3891b3ce/datastream/OBJ/view