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Experiments in Fluids

, 58:131 | Cite as

Experimental investigation of high-incidence delta-wing flow control

  • Andrei BuzicaEmail author
  • Julius Bartasevicius
  • Christian Breitsamter
Research Article

Abstract

The possibility of extending the flight envelope for configurations with slender delta-shaped wings is investigated in this study by means of active flow control through pulsating jets from slot pairs distributed along the leading edge. The experiments comprise stereoscopic particle image velocimetry as well as force and moment measurements on a half-delta wing model. The analysis focuses on three high-incidence regimes: pre-stall, stall, and post-stall. This study also compares different perturbation methods: blowing with spatially constant and variable parameters, frequency and phase. At an incidence of 45\(^\circ\), the unison pulsed blowing facilitates the most significant flow transformation. Here, the separated shear layer reattaches on the wing’s suction side, thus increasing the lift. Phase-averaged flow field measurements describe, in this particular case, the underlying physics of the flow–disturbance interaction.

Notes

Acknowledgements

The funding of the research work by the “Deutsche Forschungsgemeinschaft” (German Research Foundation/DFG) through the project DFG-BR1511-6 is gratefully acknowledged.

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Copyright information

© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  1. 1.Chair of Aerodynamics and Fluid Mechanics, Department of Mechanical EngineeringTechnical University of MunichGarchingGermany

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