Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Pressure measurements of the detachment bubble on the Bolund Island
Year:2013
Research Areas
  • Mechanical aeronautics and naval engineering
Information
Abstract
Pressure measurements on the surface of a 1:230 scale model of Bolund Island are presented. The model is smooth and no boundary layer generation has been considered since the experiment is designed as the simplest possible reference case. Measurement have been taken for a range of Reynolds numbers based on the average undisturbed wind speed U? and the maximum height of the island, h [1.7×104 , 8.5×104], and for a range of wind directions. Four minutes time series of pressure in more than 400 points have been acquired and analysed to obtain the spatial distribution of both the time average and the variance of the pressure signal. The horizontal extension of the detachment bubble for the different Reynolds numbers and wind directions is identified by isobars and curves of constant value of pressure variance. The applicability of this technique for evaluating the horizontal topology of high turbulence regions associated to detachment bubbles after escarpments in potential wind farm sites is analysed. The results obtained shows that the behaviour of the mean pressure coefficient, Cp, the std. pressure coefficient, C?p, and the skewness of the pressure, Sp can be used to study the bubble over the island to a certain extent. This experiment is part of the set of different analysis on the Bolund test case that is being undertaken within WAUDIT project by the different scientific groups.
International
Si
Congress
European Wind Energy Conference & Exhibition 2012
960
Place
Copenhagen
Reviewers
Si
ISBN/ISSN
1-62748-291-1
978-1-62748-291-2
Start Date
16/04/2012
End Date
19/04/2012
From page
1552
To page
1562
EWEA 2012 proceeding
Participants
  • Autor: Yeow Tee Seong . (UPM)
  • Autor: Alvaro Cuerva Tejero (UPM)
  • Autor: Javier Perez Alvarez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Desarrollo y Ensayos Aeroespaciales
  • Centro o Instituto I+D+i: Instituto Universitario de Microgravedad "Ignacio da Riva"
  • Departamento: Vehículos Aeroespaciales
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