Effect of the Wake of the Transducer Supports on the Ultrasonic Anemometer Measurements

Franchini, Sebastian Nicolas; Cuerva Tejero, Alvaro y Sanz Andres, Angel Pedro (2012). Effect of the Wake of the Transducer Supports on the Ultrasonic Anemometer Measurements. En: "The 2012 World Congress on Advances in Civil, Environmental, and Materials Research (ACEM' 12)", 26/08/2012 - 30/08/2012, Seoul, Korea. ISBN 978-89-89693-34-5. pp. 2643-2659.

Descripción

Título: Effect of the Wake of the Transducer Supports on the Ultrasonic Anemometer Measurements
Autor/es:
  • Franchini, Sebastian Nicolas
  • Cuerva Tejero, Alvaro
  • Sanz Andres, Angel Pedro
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: The 2012 World Congress on Advances in Civil, Environmental, and Materials Research (ACEM' 12)
Fechas del Evento: 26/08/2012 - 30/08/2012
Lugar del Evento: Seoul, Korea
Título del Libro: Proceedings of The 2012 World Congress on Advances in Civil, Environmental, and Materials Research (ACEM' 12)
Fecha: 2012
ISBN: 978-89-89693-34-5
Materias:
Escuela: E.U.I.T. Aeronáutica (UPM) [antigua denominación]
Departamento: Tecnologías Especiales Aplicadas a la Aeronáutica [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 19763
Identificador DC: http://oa.upm.es/19763/
Identificador OAI: oai:oa.upm.es:19763
Depositado por: Memoria Investigacion
Depositado el: 29 Abr 2014 18:21
Ultima Modificación: 21 Abr 2016 21:07
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