Optimization of a Fluidic Vortex Generator’s Control in a Transonic Channel Flow
| Autor: | Eric Garnier, Reynald Bur, Quentin Chanzy |
|---|---|
| Přispěvatelé: | DAAA, ONERA, Université Paris Saclay [Meudon], ONERA-Université Paris-Saclay |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Aerospace Engineering
02 engineering and technology Vortex generator BOUNDARY LAYER 01 natural sciences Compressible flow 010305 fluids & plasmas SHOCK WAVE Physics::Fluid Dynamics [SPI]Engineering Sciences [physics] 0203 mechanical engineering 0103 physical sciences ACTIVE CONTROL [CHIM]Chemical Sciences [INFO]Computer Science [cs] [MATH]Mathematics [math] Wind tunnel Physics [PHYS]Physics [physics] 020301 aerospace & aeronautics Mechanics Open-channel flow Vortex Flow control (fluid) SEPARATION Reynolds-averaged Navier–Stokes equations Transonic |
| Zdroj: | AIAA Journal AIAA Journal, American Institute of Aeronautics and Astronautics, 2020, 58 (12), pp.5216-5227. ⟨10.2514/1.J058873⟩ |
| ISSN: | 0001-1452 1533-385X |
| DOI: | 10.2514/1.J058873⟩ |
| Popis: | International audience; Flow control of separation caused by transonic shock-wave/boundary-layer interaction (SWBLI) is investigated. The control of the unsteadiness associated with SWBLI is not an objective of this paper. A SWBLI in a transonic channel is considered, and Reynolds-averaged Navier–Stokes simulations are carried out to compute the flow in the test section. The massive separation due to the interaction is controlled by fluidic vortex generators (VGs). Ten VGs are positioned in the center of the test section according to analyses based on physical considerations and literature results. A first kriging-based optimization is used to determine the most appropriate pitch and skew angles of the VGs. The optimum configuration found is then considered, and a second kriging algorithm is used to enhance the control of the corner flow by adding two VGs. The longitudinal and lateral locations and the pitch and skew angles of the two lateral VGs are optimized. The objective of these optimizations is to minimize the total pressure losses through the shock-wave/boundary-layer interaction. A configuration improving the objective function by 61% is found with slightly upstream-blowing jets. To understand this original finding, a comparison of the vorticity patterns generated by downstream- and upstream-blowing jets is therefore carried out. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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