Published January 2009
| Published
Conference Paper
Open
On the Effect of Tip Vortices in Low-Reynolds-Number Post-Stall Flow Control
- Creators
-
Taira, Kunihiko
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Colonius, Tim
Abstract
We numerically investigate the application of steady blowing to three-dimensional stalled flows around low-aspect-ratio rectangular flat-plate wings at a Reynolds number of 300. The objective of this study is to explore techniques to enhance lift by directly modifying the dynamics of the wake vortices. Out of various combinations of forcing location and direction considered, we identify two configurations that provide significant lift enhancement. In these cases, actuation appears to strengthen the tip vortices for increased downward induced velocity upon the leading-edge vortices. This in turn moves the low-pressure core directly above the top surface of the wing to greatly enhance lift.
Additional Information
© 2009 by the authors. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. Published Online: 15 Jun 2012. This work was supported by the US Air Force Office of Scientific Research (FA9550-05-1-0369) with some of the computations made possible by the US Department of Defense High Performance Computing Modernization Program. We are thankful to Professors Clarence W. Rowley, Morteza Gharib, David R. Williams, Gilead Tadmor, and Dr. William B. Dickson for the enlightening discussions.Attached Files
Published - TairaColonius2009b.pdf
Files
TairaColonius2009b.pdf
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Additional details
- Eprint ID
- 97214
- Resolver ID
- CaltechAUTHORS:20190717-102320309
- Air Force Office of Scientific Research (AFOSR)
- FA9550-05-1-0369
- Created
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2019-07-18Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field
- Other Numbering System Name
- AIAA Paper
- Other Numbering System Identifier
- 2009-376