A Spectral Analysis of LDA Turbulent Flow Measurements in a Ship Air Wake

Bardera Mora, Rafael; Barcala Montejano, Miguel Angel; Rodriguez Sevillano, Angel; González de Diego, Gonzalo y Ruiz de Sotto, Miguel (2015). A Spectral Analysis of LDA 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.

Descripción

Título: A Spectral Analysis of LDA Turbulent Flow Measurements in a Ship Air Wake
Autor/es:
  • Bardera Mora, Rafael
  • Barcala Montejano, Miguel Angel
  • Rodriguez Sevillano, Angel
  • González de Diego, Gonzalo
  • Ruiz de Sotto, Miguel
Tipo de Documento: Artículo
Título de Revista/Publicación: Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
Fecha: Marzo 2015
Materias:
Palabras Clave Informales: Laser Doppler anemometry, spectral analysis, air wake, turbulence, helicopter flight path, wind tunnel ship experiments
Escuela: E.T.S.I. Aeronáuticos (UPM) [antigua denominación]
Departamento: Aeronaves y Vehículos Espaciales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Helicopters are one of the most important tactical elements in maritime operations. The necessity for an improvement in 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 generic frigate. Measurements of the flow?s velocity have been taken by means of Laser Doppler Anemometry (LDA) in five points that simulate the last path of the landing trajectory. The data obtained in these experiments is manipulated in a frequency analysis 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 can be valuable for any study in this field. The comparison shows a clear similarity between both experiments, reasserting the wind tunnel measurements and its reliability.

Más información

ID de Registro: 35135
Identificador DC: http://oa.upm.es/35135/
Identificador OAI: oai:oa.upm.es:35135
Identificador DOI: 10.1177/0954410015573972
URL Oficial: http://www.uk.sagepub.com/journals/Journal202021
Depositado por: Memoria Investigacion
Depositado el: 27 May 2015 15:28
Ultima Modificación: 27 May 2015 15:28
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