Project description
Owl wings inspire new methods to reduce noise
Airfoil trailing edge noise is a source of loud and unwanted sound. This unwanted noise can be created by aircraft wings, propellers, helicopter rotors and wind turbines. It is among the dominant sources of noise pollution from a landing aircraft and the most significant contributor of aeroacoustic emissions from a wind turbine. Current methods designed to reduce the noise lead to a deterioration of aerodynamic performance (lift over drag ratio). The EU-funded ANACLETO project will develop a new method using riblets. A texture much like that of the riblets is found in the wing feathers of owls, known for their nearly silent flight. The aim of this project will be to investigate how riblets of different geometries impact on the aeroacoustic and aerodynamic properties of an airfoil.
Objective
The aeroacoustic emission generated by the interaction between the trailing-edge of an airfoil and the layer of fluid near the airfoil surface (boundary layer) is known as trailing-edge noise. Trailing-edge noise is among the dominant sources of noise pollution from a landing aircraft and the most significant contributor of the aeroacoustic emissions of a wind turbine. Strategies for the abatement of this source of noise were developed over the last few years, but they deteriorate the aerodynamic performance (lift over drag ratio), which hinders their implementation in engineering solutions. Riblets on the other hand have never been explored in aeroacoustics, although they lead to a drag reduction of up to 10% when applied on a flat plate. Riblets are tiny surface protrusions aligned along the flow direction. A texture analogous to riblets is found in the wing feathers of the owl, the most silent bird in the animal kingdom when flying. To investigate how riblets of different geometries impact on the aeroacoustic and aerodynamic properties of an airfoil, this project pairs a researcher with experience in experimental fluid mechanics and turbulence research with an expert in aeroacoustics and numerical methods, achieving a mutually beneficial transfer of knowledge. The Fellow will examine the effects on noise and drag reduction of a complete set of independent geometrical parameters for the riblets. This will be followed by a detailed study of the flow physics using a complementary approach involving time-resolved tomographic particle image velocimetry at high spatial resolution and high-fidelity numerical simulations with the software PowerFLOW™. The project dissemination will target scientific communities where immediate impact is envisaged, comprising aeroacoustics, aerospace and energy engineering, and turbulence. This pairing and build of project will ensure the successful completion of this ambitious research project and promote the Fellow’s career development.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology mechanical engineering vehicle engineering aerospace engineering aircraft
- engineering and technology environmental engineering energy and fuels renewable energy wind energy
- natural sciences earth and related environmental sciences environmental sciences pollution
- natural sciences mathematics pure mathematics geometry
- natural sciences mathematics applied mathematics numerical analysis
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions
MAIN PROGRAMME
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H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility
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Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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.
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 - Marie Skłodowska-Curie Individual Fellowships (IF)
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) H2020-MSCA-IF-2019
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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.
2628 CN Delft
Netherlands
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.