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Nature-inspired control of turbulent flows

Objective

Many aspects of the animal flight still remain unexplored, despite the enormous possibilities they offer to improve the current aerospace technology. One such aspect that received least attention of the scientists is the following: the wing surfaces of the flying animals are coated with hairs, feathers and other filamentous structures. These self-adaptive hairy layers strongly influence the flow field characteristics, and it has been reported that such coatings may be used to control the laminar-turbulent transition as well as turbulence in order to achieve energy efficient flight. The objectives of the NiCoFlow project are: (1) to devise the essential mathematical and computational framework to study the flow around objects with surface-mounted self-adaptive hairs, and (2) to elucidate the fundamental fluid dynamic mechanisms through which the surface coatings can enable new flow control strategies. In this work, a homogenized poro-elastic continuum models will be used to describe the flow through the hairy layers. Moreover, a computational approach to simulate two-way coupling between such homogenized continuum models and the surrounding fluid flow will be developed.. This approach will be thoroughly validated by simulating fluid flow over a flat plate attached with surface-mounted flexible hairs and comparing the numerical results against existing experimental data. The validated model will be used to perform direct numerical simulations of transitional and turbulent flows to reveal the detailed flow characteristics, and shed light on how these self-adaptive hairy features may delay the transition to turbulence and reduce the turbulent skin-friction. A potential passive control technique, relying on these nature-inspired hairy coatings, will have a large industrial impact, including applications in aeronautics, energy harvesting and the transport sector.

Fields of science (EuroSciVoc)

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Topic(s)

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Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

MSCA-IF-EF-ST - Standard EF

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Call for proposal

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(opens in new window) H2020-MSCA-IF-2015

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Coordinator

KUNGLIGA TEKNISKA HOEGSKOLAN
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 173 857,20
Address
BRINELLVAGEN 8
100 44 Stockholm
Sweden

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Region
Östra Sverige Stockholm Stockholms län
Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 173 857,20
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