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On the Effect of Tip Vortices in Low-Reynolds-Number Post-Stall Flow Control

Taira, Kunihiko and Colonius, Tim (2009) On the Effect of Tip Vortices in Low-Reynolds-Number Post-Stall Flow Control. In: 47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition, 5-8 January 2009, Orlando, FL. https://resolver.caltech.edu/CaltechAUTHORS:20190717-102320309

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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.


Item Type:Conference or Workshop Item (Paper)
Related URLs:
URLURL TypeDescription
https://doi.org/10.2514/6.2009-376DOIConference Paper
https://arc.aiaa.org/doi/10.2514/6.2009-376PublisherConference Paper
ORCID:
AuthorORCID
Taira, Kunihiko0000-0002-3762-8075
Colonius, Tim0000-0003-0326-3909
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.
Funders:
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)FA9550-05-1-0369
Subject Keywords:Aerospace Systems, Operations and Life Cycle
Other Numbering System:
Other Numbering System NameOther Numbering System ID
AIAA Paper2009-376
Record Number:CaltechAUTHORS:20190717-102320309
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190717-102320309
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97214
Collection:CaltechAUTHORS
Deposited By: Melissa Ray
Deposited On:18 Jul 2019 21:12
Last Modified:09 Mar 2020 13:19

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