Objective
Objectives
The objective of the project is to develop models for quantifying the noise emission from airfoil sections and blades of wind turbines. Special emphasis is laid on the influence of airfoil and blade shape on noise radiation. The models will facilitate the development of design tools enabling manufacturers to take the noise problem into account at an early stage of blade and turbine development. The new models will be used within the project for parametric studies in order to create a database which can be used as a design guideline. A further objective of the project is the development of a Windows-based computer program which allows the design of wind parks with respect to the noise emmission in the surroundings.
Technical Approach
The technical approach follows basically along two lines: (1) a large experimental study with aerodynamic and acoustic measurements in two wind tunnels, (2) a theoretical and numerical approach where state-of-the-art techniques will be used for flow simulations and for the development of new noise prediction models. The experiments will be performed at the National Aerospace Laboratory, NL. Measurements will be taken on seven 2D-sections with currently used airfoils and on five 3D-models (blade tips) of different planforms and sizes. Aerodynamic measurements will use (a) hot-wires to determine the boundary layer characteristics (velocity profile, distribution of turbulent kinetic energy, spectra), (b) miniature pressure transducers to measure the surface pressure fluctuations, (c) five-hole probes to measure the roll-up of the tip vortex behind a blade tip. A balance will allow loads to be determned. Acoustic measurements on a large number of models will use an acoustic antenna. Turbulence grids will be mounted at the nozzle outlet in order to study the influence of incoming turbulence on noise. The flow simulations will take place at the Free University of Brussels (VUB). The formulation of improved models for noise prediction will be undertaken in close co-operation between University of Stuttgart (D), the TNO-Institute of Applied Physics (NL), and VUB (B).
Expected Achievements and Exploitation
The expected achievements of the project are:
- improved models for the relevant noise mechanisms which take the airfoil shape into account,
- improved understanding of the noise generation at the blade tip, - design guidelines for reduced aerodynamic noise wind turbines, - Windows-based computer program for wind park design.
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.
- natural sciences computer and information sciences databases
- engineering and technology mechanical engineering vehicle engineering aerospace engineering aircraft
- engineering and technology environmental engineering energy and fuels renewable energy wind energy
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Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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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.
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
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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.
Coordinator
70585 STUTTGART
Germany
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.