Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session T06: Aerodynamics: Folding, Flapping, Twisting and Rotating Wings
4:25 PM–5:56 PM,
Monday, November 20, 2023
Room: 102B
Chair: Kenneth Breuer, Center for Fluid Mechanics, Brown University
Abstract: T06.00007 : Active flow control of a transitional-open, three-dimensional cavity with lateral apertures in a channel flow configuration: Mitigation of the pressure footprint and fluctuations.*
5:43 PM–5:56 PM
Presenter:
AMMAM Tarek
(LAMIH, Université Polytechnique Hauts de France)
Author:
AMMAM Tarek
(LAMIH, Université Polytechnique Hauts de France)
Collaborations:
AMMAM Tarek, KEIRSBULCK Laurent, BASLEY Jérémy
Unsteady numerical CFD simulations and experiments have been conducted to identify the mechanisms underlying the flow dynamics of both baseline and controlled cases. Concomitant pressure, and Particle Image Velocimetry (PIV) measurements have been performed at a Reynolds number of 2.8*105. Centerline wall pressure coefficient distribution Cp and cavity inner flow fields are compared between experimental and numerical data. They show good agreement.
The control strategy changes the flow drastically upstream of the cavity. The boundary layer is thickened, and the ground clearance flow rate is reduced. It transforms the dynamics of the shear layer impinging onto the cavity and impacts the inner recirculation bubble. The steady blowing is successful to reduce the pressure gradient between upstream and downstream cavity walls, with almost 20%. It has also reduced the fluctuations all along the cavity walls with an amount of 20%.
*This work was carried out within the framework of the CNRS research federation on ground transports and mobility, in articulation with ELSAT2020 project supported by the European community, the French ministry of higher education and research, and the Haut-de-France regional council. The authors gratefully acknowledge the support of these institutions.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700