Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session G15: Flow Control: Wakes and Internal Flows
10:35 AM–12:45 PM,
Monday, November 19, 2018
Georgia World Congress Center
Room: B302
Chair: Miki Amitay, Rensselaer Polytechnic Institute
Abstract ID: BAPS.2018.DFD.G15.4
Abstract: G15.00004 : Control of the Forebody Vortices Over an Inclined Axisymmetric Body
11:14 AM–11:27 AM
Presenter:
Edward Lee
(Georgia Institute of Technology)
Authors:
Edward Lee
(Georgia Institute of Technology)
Daniel Heathcote
(Georgia Institute of Technology)
Bojan Vukasinovic
(Georgia Institute of Technology)
Ari Glezer
(Georgia Inst of Tech)
The aerodynamic loads on an inclined cylinder are regulated in wind tunnel experiments by controlling the counter-rotating vortices formed near the leading edge of the cylinder’s conical forebody segment and the near-wake at its aft end. Fluidic actuation is effected by independent azimuthal arrays of synthetic jets at the transition sections between the conical forebody and aft segments of the modular cylinder (L/D = 4). The model is supported by a 6-DOF eight-wire traverse, whose motion is controlled by a dedicated servomotor and load cell for each wire. Vortex pairs formed over the forebody by adjusting its azimuthal position and their interactions with the wake of the cylinder are manipulated at pitch angles up to 25° and yaw within ±10o. The effects of these interactions on the global flow field are assessed using stereo PIV measurements in the wake of the cylinder. It is shown that actuation at the forebody juncture can enhance or restore the symmetry of the vortex pair, providing bi-directional control of the aerodynamic side forces, and that actuation at the fore- and aft body junctures alters the axial and normal forces. Spectral analysis of the aerodynamic loads indicate that the actuation stabilizes the model and alters the shedding of vorticity concentrations.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.G15.4
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