Determination of Maximum Mechanical Energy Efficiency in Energy Galloping Systems

Meseguer Ruiz, José; Sanz Andres, Angel Pedro y Alonso Rodrigo, Gustavo (2015). Determination of Maximum Mechanical Energy Efficiency in Energy Galloping Systems. "Journal of Engineering Mechanics", v. 141 (n. 1); pp. 1-8. ISSN 0733-9399. https://doi.org/10.1061/(ASCE)EM.1943-7889.0000817..

Descripción

Título: Determination of Maximum Mechanical Energy Efficiency in Energy Galloping Systems
Autor/es:
  • Meseguer Ruiz, José
  • Sanz Andres, Angel Pedro
  • Alonso Rodrigo, Gustavo
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Engineering Mechanics
Fecha: Enero 2015
Volumen: 141
Materias:
Palabras Clave Informales: Galloping; Energy harvesting; Wind tunnel
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

Transverse galloping is a type of aeroelastic instability characterized by large amplitude, low frequency, normal to wind oscillations that appear in some elastic two-dimensional bluff bodies when subjected to a fluid flow, provided that the flow velocity exceeds a threshold critical value. Such an oscillatory motion is explained because of the energy transfer from the flow to the two-dimensional bluff body. The 7 amount of energy that can be extracted depends on the cross section of the galloping prism. Assuming that the Glauert-Den Hartog quasistatic criterion for galloping instability is satisfied in a first approximation, the suitability of a given cross section for energy harvesting is evaluated by analyzing the lateral aerodynamic force coefficient, fitting a function with a power series in tan a (a being the angle of attack) to 10 available experimental data. In this paper, a fairly large number of simple prisms (triangle, ellipse, biconvex, and rhombus cross sections, as well 11 as D-shaped bodies) is analyzed for suitability as energy harvesters. The influence of the fitting process in the energy harvesting efficiency evaluation is also demonstrated. The analysis shows that the more promising bodies are those with isosceles or approximate isosceles cross sections.

Más información

ID de Registro: 35800
Identificador DC: http://oa.upm.es/35800/
Identificador OAI: oai:oa.upm.es:35800
Identificador DOI: 10.1061/(ASCE)EM.1943-7889.0000817.
URL Oficial: http://ascelibrary.org/doi/10.1061/%28ASCE%29EM.1943-7889.0000817
Depositado por: Memoria Investigacion
Depositado el: 29 Jun 2015 15:41
Ultima Modificación: 29 Jun 2015 15:41
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