Vortex Flow and Vortex Breakdown above a Delta Wing in High Subsonic Flow: AnExperimental Investigation (Wervelstroming en Wervel 'Breakdown' Boven een Deltavleugel in Hoog-subsone Stroming: Een Experimenteel Onderzoek)

摘要

The flow field considered is that of a flat-plate, 65 deg. sweep, bevelled sharpleading edge delta wing in a high subsonic free stream. The current study examines the flow field using a variety of qualitative and quantitative investigative techniques. The techniques applied include several conventional measurement and visualization techniques. An overview of the method of approach used for investigating the various questions outlined is presented in Chapter 2. In Chapter 3, the various measurement systems and techniques used in the current study are described in detail together with a discussion on measurement quality. The five-hole probe measurement techniques make its data quality analyis more complex. The development and validation of the surface reflective visualization system SRV technique are discussed in Chapter 5. The geometry and other interesting aspects of the vortex system observed in the current investigation, both with and without vortex breakdown present above the wing, are presented in Chpater 6. Finally, conclusions and future prospects are given in Chpater 7.