Abstract
Experiments were carried out for plunging wings in order to investigate the unsteady features of the tip vortex and wake. Wave-like motion of the wake in the mid-span plane as well as the periodic variations of the tip vortex and wake in a crossflow plane were captured in flow visualization and velocity measurements. The amplitude and phase of these oscillations vary with wing oscillation frequency and amplitude. Both the tip vortex amplitude and the wake oscillation amplitude have poor correlation with Strouhal number, but the latter is always smaller at low Strouhal numbers. With increasing Strouhal number, wake oscillations become smaller as a reverse Karman street develops in the mid-span plane, while multiple vortical structures appear in the crossflow plane due to the interconnected vortex loops. These results have implications for vortex interactions with downstream wings.
Original language | English |
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Title of host publication | AIAA Scitech 2020 Forum |
Publisher | American Institute of Aeronautics and Astronautics Inc. |
Pages | 1-20 |
Number of pages | 20 |
ISBN (Print) | 9781624105951 |
DOIs | |
Publication status | E-pub ahead of print - 5 Jan 2020 |
Event | AIAA Scitech Forum, 2020 - Orlando, USA United States Duration: 6 Jan 2020 → 10 Jan 2020 |
Publication series
Name | AIAA Scitech 2020 Forum |
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Volume | 1 PartF |
Conference
Conference | AIAA Scitech Forum, 2020 |
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Country/Territory | USA United States |
City | Orlando |
Period | 6/01/20 → 10/01/20 |
Funding
The first author acknowledges the scholarship support of the Republic of Turkey Ministry of National Education.
ASJC Scopus subject areas
- Aerospace Engineering