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Memorias de investigación
Communications at congresses:
Effect of the Wake of the Transducer Supports on the Ultrasonic Anemometer Measurements
Year:2012
Research Areas
  • Mechanical aeronautics and naval engineering
Information
Abstract
The wake produced by the structural supports of the ultrasonic anemometers (UAs) causes distortions in the velocity field in the vicinity of the sonic path. These distortions are measured by the UA, inducing errors in the determination of the mean velocity, turbulence intensity, spectrum, etc.; basic parameters to determine the effect of wind on structures. Additionally, these distortions can lead to indefinition in the calibration function of the sensors (Cuerva et al., 2004). Several wind tunnel tests have been dedicated to obtaining experimental data, from which have been developed fit models to describe and to correct these distortions (Kaimal, 1978 and Wyngaard, 1985). This work explores the effect of a vortex wake generated by the supports of an UA, on the measurement of wind speed done by this instrument. To do this, the Von Karman¿s vortex street potential model is combined with the mathematical model of the measuring process carried out by UAs developed by Franchini et al. (2007). The obtained results are the correction functions of the measured wind velocity, which depends on the geometry of the sonic anemometer and aerodynamic conditions. These results have been validated with the ones obtained in a wind tunnel test done on a single path UA, especially developed for research. The supports of this UA have been modified in order to reproduce the conditions of the theoretical model. Good agreements between experimental and theoretical results have been found.
International
Si
Congress
The 2012 World Congress on Advances in Civil, Environmental, and Materials Research (ACEM? 12)
960
Place
Seoul, Korea
Reviewers
Si
ISBN/ISSN
978-89-89693-34-5
Start Date
26/08/2012
End Date
30/08/2012
From page
2643
To page
2659
Proceedings of The 2012 World Congress on Advances in Civil, Environmental, and Materials Research (ACEM? 12)
Participants
  • Autor: Sebastian Nicolas Franchini Longhi (UPM)
  • Autor: Alvaro Cuerva Tejero (UPM)
  • Autor: Angel Pedro Sanz Andres (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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