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An empirical correlation between lift and the properties of leading-edge vortices

Jardin, T. and Choi, J. and Colonius, T. (2021) An empirical correlation between lift and the properties of leading-edge vortices. Theoretical and Computational Fluid Dynamics, 35 (4). pp. 437-448. ISSN 0935-4964. doi:10.1007/s00162-021-00567-x. https://resolver.caltech.edu/CaltechAUTHORS:20210603-160013203

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Abstract

Using data from numerical simulations, we show that the lift experienced by both impulsively started and surging airfoils correlates well with the sum of the circulation of the leading-edge vortices truncated at the trailing edge. Therefore, we suggest that reasonable estimates of the lift can be obtained using only two vortex parameters, i.e., its circulation and its position. In addition to being convenient for non-intrusive estimation of forces from PIV measurements, we show that this approach can be used to derive low-order models for the analysis of vortex-lift configurations. In particular, we apply this correlation to model high-amplitude surging, which allows us to quantify the effect of wake-capture mechanisms and to determine the flow parameters that drive optimal lift.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1007/s00162-021-00567-xDOIArticle
https://rdcu.be/clTkIPublisherFree ReadCube access
ORCID:
AuthorORCID
Jardin, T.0000-0001-9704-2984
Colonius, T.0000-0003-0326-3909
Additional Information:© The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021. Received 28 December 2019; Accepted 20 April 2021; Published 27 May 2021. TC gratefully acknowledges support by the US Air Force Office of Scientific Research (Grant No. FA9550-14-1-0328). TJ is grateful for support from the Fondation ISAE-Supaero. The authors declare that they have no conflict of interest.
Funders:
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)FA9550-14-1-0328
Fondation ISAE-SupaeroUNSPECIFIED
Subject Keywords:Leading-edge vortex; Low-order model; Surging wings
Issue or Number:4
DOI:10.1007/s00162-021-00567-x
Record Number:CaltechAUTHORS:20210603-160013203
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20210603-160013203
Official Citation:Jardin, T., Choi, J. & Colonius, T. An empirical correlation between lift and the properties of leading-edge vortices. Theor. Comput. Fluid Dyn. 35, 437–448 (2021). https://doi.org/10.1007/s00162-021-00567-x
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:109374
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:03 Jun 2021 23:30
Last Modified:09 Jul 2021 22:34

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