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Titel:
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First results from Mexnext: Analysis of detailed aerodynamic measurements on a 4.5 diameter rotor placed in the large German Dutch Wind Tunnel DNW
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Auteur(s):
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Gepubliceerd door:
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Publicatie datum:
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ECN
Windenergie
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19-7-2010
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ECN publicatienummer:
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Publicatie type:
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ECN-M--10-045
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Conferentiebijdrage
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Aantal pagina's:
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Volledige tekst:
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11
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Download PDF
(586kB)
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Gepresenteerd op: European Wind Energy Conference and Exhibition (EWEC), Warsaw, Poland, 20-23 april 2010.
Samenvatting:
This paper presents an analysis of measurements
which have been taken in the EU project Mexico
(Model Rotor Experiments In Controlled Conditions).
In the Mexico project a large number of
European research institutes and universities cooperated.
The project resulted in a database of
measurements on a 3 bladed 4.5 m diameter wind
turbine model placed in the LLF tunnel (with a 9.5
by 9.5 m2 open test section) of DNW in the Netherlands.
Pressure and load measurements on the
blade have been carried out simultaneously with
stereo PIV flow field measurements.
An extensive analysis of the Mexico measurements
takes place within IEA Task 29 Mexnext.
The paper presents recent results from ECN obtained
within the framework of this IEA Task where
special attention is paid to the correlation between
pressure measurements and the overall wind turbine
loads, the influence of the rotational speed on
the aerodynamics, the correlation between pressure
measurements and the tip vortices in the
wake, the non-uniformity of the flow within the rotor
plane and the tip vortex trajectories at yawed
conditions
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