Singularities and undefinitions in the calibration functions of sonic anemometers

Cuerva Tejero, Alvaro; Sanz Andres, Angel Pedro y Lopez Garcia, Oscar (2004). Singularities and undefinitions in the calibration functions of sonic anemometers. "Journal of Atmospheric and Oceanic Technology", v. 21 (n. 12); pp. 1868-1875. ISSN 0739-0572. https://doi.org/10.1175/JTECH-1651.1.

Descripción

Título: Singularities and undefinitions in the calibration functions of sonic anemometers
Autor/es:
  • Cuerva Tejero, Alvaro
  • Sanz Andres, Angel Pedro
  • Lopez Garcia, Oscar
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Atmospheric and Oceanic Technology
Fecha: 2004
Volumen: 21
Materias:
Escuela: E.T.S.I. Aeronáuticos (UPM) [antigua denominación]
Departamento: Vehículos Aeroespaciales [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

A mathematical model of the process employed by a sonic anemometer to build up the measured wind vector in a steady flow is presented to illustrate the way the geometry of these sensors as well as the characteristics of aerodynamic disturbance on the acoustic path can lead to singularities in the transformation function that relates the measured (disturbed) wind vector with the real (corrected) wind vector, impeding the application of correction/calibration functions for some wind conditions. An implicit function theorem allows for the identification of those combinations of real wind conditions and design parameters that lead to undefined correction/ calibration functions. In general, orthogonal path sensors do not show problematic combination of parameters. However, some geometric sonic sensor designs, available in the market, with paths forming smaller angles could lead to undefined correction functions for some levels of aerodynamic disturbances and for certain wind directions. The parameters studied have a strong influence on the existence and number of singularities in the correction/ calibration function as well as on the number of singularities for some combination of parameters. Some conclusions concerning good design practices are included.

Más información

ID de Registro: 39748
Identificador DC: http://oa.upm.es/39748/
Identificador OAI: oai:oa.upm.es:39748
Identificador DOI: 10.1175/JTECH-1651.1
URL Oficial: http://journals.ametsoc.org/doi/pdf/10.1175/JTECH-1651.1
Depositado por: Biblioteca ETSI Aeronauticos
Depositado el: 29 Mar 2016 08:58
Ultima Modificación: 29 Mar 2016 08:58
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