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Fast and accurate quasi-3D aerodynamic methods for aircraft conceptual design studies

Published online by Cambridge University Press:  02 December 2020

O. Şugar-Gabor Open the ORCID record for O. Şugar-Gabor [Opens in a new window]  and
A. Koreanschi
O. Şugar-Gabor*
Affiliation:
Aeronautical and Mechanical Engineering University of SalfordM5 4WTSalfordUK
A. Koreanschi
Affiliation:
Aeronautical and Mechanical Engineering University of SalfordM5 4WTSalfordUK
*
[email protected]
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Abstract

In this paper, recent developments in quasi-3D aerodynamic methods are presented. At their core, these methods are based on the lifting-line theory and vortex lattice method, but with a relaxed set of hypotheses, while also considering the effect of viscosity (to a certain degree) by introducing a strong non-linear coupling with two-dimensional viscous aerofoil aerodynamics. These methods can provide more accurate results compared with their inviscid classical counterparts and have an extended range of applicability with respect to the lifting surface geometry. Verification results are presented for both steady-state and unsteady flows, as well as case studies related to their integration into aerodynamic shape optimisation tools. The good accuracy achieved using relatively low computational time makes such quasi-3D methods a solid choice for conducting conceptual-level design and optimisation of lifting surfaces.

Keywords

Quasi-3D aerodynamicsNonlinear lifting-line methodNonlinear vortex lattice methodMethods for conceptual-level wing design and optimisation
Type
Research Article
Information
The Aeronautical Journal , Volume 125 , Issue 1286 , April 2021 , pp. 593 - 617
Copyright
© The Author(s), 2020. Published by Cambridge University Press on behalf of Royal Aeronautical Society

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