Sonic anemometry of planetary atmospheres

Cuerva Tejero, Alvaro and Sanz Andres, Angel Pedro (2003). Sonic anemometry of planetary atmospheres. "Journal of Geophysical Research", v. 108 (n. E4); pp.. ISSN 0148-0227.


Title: Sonic anemometry of planetary atmospheres
  • Cuerva Tejero, Alvaro
  • Sanz Andres, Angel Pedro
Item Type: Article
Título de Revista/Publicación: Journal of Geophysical Research
Date: April 2003
Volume: 108
Faculty: E.T.S. de Ingeniería Aeronáutica y del Espacio (UPM)
Department: Vehículos Aeroespaciales [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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The application of a recently developed model of sonic anemometers measuring process has revealed that these sensors cannot be considered as absolute ones when measuring spectral characteristics of turbulent wind speed since it is demonstrated that the ratios of measured to real spectral density functions depend on the composition and temperature of the considered planetary atmosphere. The new model of the measuring process of sonic anemometers is applied to describe the measuring characteristics of these sensors as fluid/flow dependent (against the traditional hypothesis of fluid/flow independence) and hence dependent on the considered planetary atmosphere. The influence of fluid and flow characteristics (quantified via the Mach number of the flow) and the influence of the design parameters of sonic anemometers (mainly represented by time delay between pulses shots and geometry) on turbulence measurement are quantified for the atmospheres of Mars, Jupiter, and Earth. Important differences between the behavior of these sensors for the same averaged wind speed in the three considered atmospheres are detected in terms of characteristics of turbulence measurement as well as in terms of optimum values of anemometer design parameters for application on the different considered planetary atmospheres. These differences cannot be detected by traditional models of sonic anemometer measuring process based on line averaging along the sonic acoustic paths.

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Item ID: 39781
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Deposited by: Biblioteca ETSI Aeronauticos
Deposited on: 31 Mar 2016 11:49
Last Modified: 31 Mar 2016 11:49
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