Determination of Maximum Mechanical Energy Efficiency in Energy Galloping Systems

Meseguer Ruiz, José and Sanz Andres, Angel Pedro and 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.

Description

Title: Determination of Maximum Mechanical Energy Efficiency in Energy Galloping Systems
Author/s:
  • Meseguer Ruiz, José
  • Sanz Andres, Angel Pedro
  • Alonso Rodrigo, Gustavo
Item Type: Article
Título de Revista/Publicación: Journal of Engineering Mechanics
Date: January 2015
ISSN: 0733-9399
Volume: 141
Subjects:
Freetext Keywords: Galloping; Energy harvesting; Wind tunnel
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

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.

More information

Item ID: 35800
DC Identifier: http://oa.upm.es/35800/
OAI Identifier: oai:oa.upm.es:35800
DOI: 10.1061/(ASCE)EM.1943-7889.0000817
Official URL: http://ascelibrary.org/doi/10.1061/%28ASCE%29EM.1943-7889.0000817
Deposited by: Memoria Investigacion
Deposited on: 29 Jun 2015 15:41
Last Modified: 31 May 2019 14:19
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