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AEROelastic instabilities and control of FLEXible Structures

AEROelastic instabilities and control of FLEXible Structures

Objective

Aeroelastic instabilities are at the origin of large deformations of structures and are limiting the capacities of products in various industrial branches such as aeronautics, marine industry, or wind electricity production. If suppressing aeroelastic instabilities is an ultimate goal, a paradigm shift in the technological development is to take advantage of these instabilities to achieve others objectives, as reducing the drag of these flexible structures. The ground-breaking challenges addressed in this project are to design fundamentally new theoretical methodologies for (i) describing mathematically aeroelastic instabilities, (ii) suppressing them and (iii) using them to reduce mean drag of structures at a low energetic cost. To that aim, two types of aeroelastic phenomena will be specifically studied: the flutter, which arises as a result of an unstable coupling instability between two stable dynamics, that of the structures and that the flow, and vortex-induced vibrations which appear when the fluid dynamics is unstable. An aeroelastic global stability analysis will be first developed and applied to problems of increasing complexity, starting from two-dimensional free-vibrating rigid structures and progressing towards three-dimensional free-deforming elastic structures. The control of these aeroelastic instabilities will be then addressed with two different objectives: their suppression or their use for flow control. A theoretical passive control methodology will be established for suppressing linear aeroelastic instabilities, and extended to high Reynolds number flows and experimental configurations. New perturbation methods for solving strongly nonlinear problems and adjoint-based control algorithm will allow to use these aeroelastic instabilities for drag reduction. This project will allow innovative control solutions to emerge, not only in flutter or vortex-induced vibrations problems, but also in a much broader class of fluid-structure problems.
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Host institution

OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES

Address

Chemin De La Huniere
91120 Palaiseau

France

Activity type

Higher or Secondary Education Establishments

EU Contribution

€ 1 377 290

Beneficiaries (1)

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OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES

France

EU Contribution

€ 1 377 290

Project information

Grant agreement ID: 638307

Status

Ongoing project

  • Start date

    1 July 2015

  • End date

    30 June 2020

Funded under:

H2020-EU.1.1.

  • Overall budget:

    € 1 377 290

  • EU contribution

    € 1 377 290

Hosted by:

OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALES

France