Techno Press
Techno Press

Wind and Structures   Volume 21, Number 1, July 2015, pages 105-117
DOI: http://dx.doi.org/10.12989/was.2015.21.1.105
 
Numerical characterization of real railway overhead cables
Cristina Sanchez-Rebollo, Enrique Velez and Jesus R. Jimenez-Octavio

 
Abstract     [Full Text]
    This paper presents a numerical characterization of real railway overhead cables based on computational fluid dynamics (CFD). Complete analysis of the aerodynamic coefficients of this type of cross section yields a more accurate modelling of pressure loads acting on moving cables than provided by current approaches used in design. Thus, the characterization of certain selected commercial cables is carried out in this work for different wind speeds and angles of attack. The aerodynamic lift and drag coefficients are herein determined for two different types of grooved cables, which establish a relevant data set for the railway industry. Finally, the influence of this characterization on the fluid-structure interaction (FSI) is proved, the static behavior of a catenary system is studied by means of the finite element method (FEM) in order to analyze the effect of different wind angles of attack on the stiffness distribution.
 
Key Words
    aerodynamic characteristics; overhead catenary line; CFD simulation; cable; lift force
 
Address
Cristina Sanchez-Rebollo: Institute for Research in Technology, Universidad Pontificia Comillas, c/ Santa Cruz de Marcenado 26, 28015 Madrid, Spain
Enrique Velez and Jesus R. Jimenez-Octavio: Department of Mechanical Engineering, Universidad Pontificia Comillas, c/ Alberto Aguilera 23, 28015 Madrid, Spain
 

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