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Title:
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Noise aspects at aerodynamic blade optimisation projects
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Author(s):
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Published by:
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Publication date:
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ECN
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1997
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ECN report number:
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Document type:
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ECN-RX--97-015
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Article (scientific)
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Number of pages:
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14
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Published in: Paper, presented at the IEA expert meeting on aeroacoustics, March 17, 1997, Milano, Italy (), , , Vol., p.-.
Abstract:
The Netherlands Energy Research Foundation (ECN) has often been involvedin industrial projects, in which blade geometries are created automatic by
means of numerical optimisation. Usually, these projects aim at the
determination of the aerodynamic optimal wind turbine blade, i.e. the goal is
to design a blade which is optimal with regard to energy yield. In other
cases, blades have been designed which are optimal with regard to cost of
generated energy. However, it is obvious that the wind turbine blade designs
which result from these optimisations, are not necessarily optimal with
regard to noise emission. In this paper an example is shown of an aerodynamic
blade optimisation, using the ECN-program PVOPT. PVOPT calculates the optimal
wind turbine blade geometry such that the maximum energy yield is obtained.
Using the aerodynamic optimal blade design as a basis, the possibilities of
noise reduction are investigated. 11 figs., 8 refs.
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