A Spectral Analysis of laser Doppler anemometry Turbulent Flow Measurements in a Ship Air Wake

Bardera Mora, Rafael and Barcala Montejano, Miguel Angel and Rodriguez Sevillano, Angel and González de Diego, Gonzalo and Ruiz de Sotto, Miguel (2015). A Spectral Analysis of laser Doppler anemometry Turbulent Flow Measurements in a Ship Air Wake. "Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering" ; pp. 1-12. ISSN 0954-4100. https://doi.org/10.1177/0954410015573972.

Description

Title: A Spectral Analysis of laser Doppler anemometry Turbulent Flow Measurements in a Ship Air Wake
Author/s:
  • Bardera Mora, Rafael
  • Barcala Montejano, Miguel Angel
  • Rodriguez Sevillano, Angel
  • González de Diego, Gonzalo
  • Ruiz de Sotto, Miguel
Item Type: Article
Título de Revista/Publicación: Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
Date: March 2015
ISSN: 0954-4100
Subjects:
Freetext Keywords: Laser Doppler anemometry, spectral analysis, air wake, turbulence, helicopter flight path, wind tunnel ship experiments
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Aeronaves y Vehículos Espaciales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Helicopters are one of the most important tactical elements in maritime operations. The necessity to improve the conditions in which the landing and take-off operations are carried out leads to the study of the flow that separates from the ship’s superstructure over the flight deck. To investigate this flow a series of wind tunnel experiments have been performed by testing a sub-scale model of a frigate. Measurements of the flow velocity have been taken by means of laser Doppler anemometry in five points that simulate the last path of the landing trajectory. The data obtained in these experiments is analyzed in the frequency domain where the corresponding spectra are calculated. Onboard measurements from an actual full-scale frigate are analyzed and compared with the wind tunnel results. Conclusions obtained consist of a series of illustrative values of turbulent energy frequency ranges, which are valuable for any study in this field. The comparison shows a similarity between both experiments, reasserting the role of the wind tunnel measurements in these kind of studies.

More information

Item ID: 35135
DC Identifier: http://oa.upm.es/35135/
OAI Identifier: oai:oa.upm.es:35135
DOI: 10.1177/0954410015573972
Official URL: https://journals.sagepub.com/doi/10.1177/0954410015573972
Deposited by: Memoria Investigacion
Deposited on: 27 May 2015 15:28
Last Modified: 30 May 2019 17:09
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