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Yorkston, Adam, Blyth, Mark and Parau, Emilian 
ORCID: https://orcid.org/0000-0001-5134-2068
(2021)
A model of an inflatable elastic aerofoil.
Journal of Engineering Mathematics, 131.
ISSN 0022-0833
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Abstract
A novel method is presented to calculate the deformation of a simple elastic aerofoil with a view to determining its aerodynamic viability. The aerofoil is modelled as a thin two-dimensional elastic sheet whose ends are joined together to form a corner of prescribed angle, with a simple support included to constrain the shape to resemble that of a classical aerofoil. The weight of the aerofoil is counterbalanced exactly by the lift force due to a circulation set according to the Kutta condition. An iterative process based on a boundary integral method is used to compute the deformation of the aerofoil in response to an inviscid fluid flow, and a range of flow speeds is determined for which the aerofoil maintains an aerodynamic shape. As the flow speed is increased the aerofoil deforms significantly around its trailing edge, resulting in a negative camber and a loss of lift. The loss of lift is ameliorated by increasing the inflation pressure but at the expense of an increase in drag as the aerofoil bulges into a less aerodynamic shape. Boundary layer calculations and nonlinear unsteady viscous simulations are used to analyse the aerodynamic characteristics of the deformed aerofoil in a viscous flow. By tailoring the internal support the viscous boundary layer separation can be delayed and the lift-to-drag ratio of the aerofoil can be substantially increased.
| Item Type: | Article |
|---|---|
| Additional Information: | Funding Information: The authors acknowledge the partial support of Royal Society International Exchanges Travel Grant IEC/NSFC/181279. |
| Uncontrolled Keywords: | aerodynamics,boundary-integral method,fluid–structure interaction,mathematics(all),engineering(all) ,/dk/atira/pure/subjectarea/asjc/2600 |
| Faculty \ School: | Faculty of Science > School of Mathematics (former - to 2024) |
| UEA Research Groups: | Faculty of Science > Research Groups > Fluid and Solid Mechanics (former - to 2024) Faculty of Science > Research Groups > Fluids & Structures |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 13 Jul 2021 00:10 |
| Last Modified: | 18 Nov 2024 00:50 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/80536 |
| DOI: | 10.1007/s10665-021-10184-6 |
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