Imperial College London
Alternate

Dr Chris Cantwell

Faculty of Engineering, Department of Aeronautics

Senior Lecturer in Aeronautics
 
 
 
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Contact

 

+44 (0)20 7594 5050c.cantwell Website

 
 
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Location

 

Department of Aeronautics, Room 219City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Son:2022:10.1017/jfm.2022.224,
author = {Son, O and Gao, A and Gursul, I and Cantwell, C and Wang, Z and Sherwin, S},
doi = {10.1017/jfm.2022.224},
journal = {Journal of Fluid Mechanics},
pages = {1--30},
title = {Leading-edge vortex dynamics on plunging airfoils and wings},
url = {http://dx.doi.org/10.1017/jfm.2022.224},
volume = {940},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The vortex dynamics of leading-edge vortices on plunging high-aspect-ratio (AR = 10) wings and airfoils were investigated by means of volumetric velocity measurements, numerical simulations, and stability analysis in order to understand the deformation of the leading-edge vortex filament and spanwise instabilities. The vortex filaments on both the wing and airfoilexhibit spanwise waves, but with different origins. The presence of a wing tip causes the leg of the vortex to remain attached to the wing upper surface, while the initial deformation of the filament near the wing-tip resembles a helical vortex. The essential features can be modelled as the deformation of initially L-shaped semi-infinite vortex column. In contrast, the instabilityof the vortices is well captured by the instability of counter-rotating vortex pairs, which are formed either by the trailing-edge vortices or the secondary vortices rolled-up from the wing surface. The wavelengths observed in the experiments and simulations are in agreement with the stability analysis of counter-rotating vortex pairs of unequal strength.
AU  - Son,O
AU  - Gao,A
AU  - Gursul,I
AU  - Cantwell,C
AU  - Wang,Z
AU  - Sherwin,S
DO  - 10.1017/jfm.2022.224
EP  - 30
PY  - 2022///
SN  - 0022-1120
SP  - 1
TI  - Leading-edge vortex dynamics on plunging airfoils and wings
T2  - Journal of Fluid Mechanics
UR  - http://dx.doi.org/10.1017/jfm.2022.224
UR  - https://www.cambridge.org/core/journals/journal-of-fluid-mechanics/article/leadingedge-vortex-dynamics-on-plunging-airfoils-and-wings/8F19022FD4FFE418A71E513EFCA40903
UR  - http://hdl.handle.net/10044/1/96116
VL  - 940
ER  -
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