Numerical Simulation of the Aerodynamic Behavior of High Velocity Trains under Synthetic Crosswinds of Different Shear and Turbulence Characteristics

García García, Javier; Muñoz Paniagua, Jorge; Jiménez, A.; Migoya Valor, Emilio y Crespo Martínez, Antonio (2014). Numerical Simulation of the Aerodynamic Behavior of High Velocity Trains under Synthetic Crosswinds of Different Shear and Turbulence Characteristics. En: "Second International Conference on Railway Technology: Research, Development and Maintenance", 8-11 April 2014, Ajaccio-Córcega (Francia). ISBN 978-1-905088-59-1. pp. 1-19.

Descripción

Título: Numerical Simulation of the Aerodynamic Behavior of High Velocity Trains under Synthetic Crosswinds of Different Shear and Turbulence Characteristics
Autor/es:
  • García García, Javier
  • Muñoz Paniagua, Jorge
  • Jiménez, A.
  • Migoya Valor, Emilio
  • Crespo Martínez, Antonio
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: Second International Conference on Railway Technology: Research, Development and Maintenance
Fechas del Evento: 8-11 April 2014
Lugar del Evento: Ajaccio-Córcega (Francia)
Título del Libro: Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance
Fecha: 2014
ISBN: 978-1-905088-59-1
Materias:
Palabras Clave Informales: train aerodynamics, cross wind, atmospheric turbulence
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Ingeniería Energética
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

A numerical simulation of the aerodynamic behavior of high-speed trains under synthetic crosswinds at a 90º yaw angle is presented. The train geometry is the aerodynamic train model (ATM). Flow description based on numerical simulations is obtained using large eddy simulation (LES) and the commercial code ANSYSFluent V14.5. A crosswind whose averaged velocity and turbulence characteristics change with distance to the ground is imposed. Turbulent fluctuations that vary temporally and spatially are simulated with TurbSim code. The crosswind boundary condition is calculated for the distance the train runs during a simulation period. The inlet streamwise velocity boundary condition is generated using Taylor?s frozen turbulence hypothesis. The model gives a time history of the force and moments acting on the train; this includes averaged values, standard deviations and extreme values. Of particular interest are the spectra of the forces and moments, and the admittance spectra. For comparison, results obtained with LES and a uniform wind velocity fluctuating in time, and results obtained with Reynolds averaged Navier Stokes equations (RANS), and the averaged wind conditions, are also presented.

Proyectos asociados

TipoCódigoAcrónimoResponsableTítulo
Gobierno de EspañaTRA 2010-20582Sin especificarSin especificarSin especificar

Más información

ID de Registro: 37007
Identificador DC: http://oa.upm.es/37007/
Identificador OAI: oai:oa.upm.es:37007
URL Oficial: http://www.civil-comp.com/pubs/catalog.htm?t=descrip&f=rw2014
Depositado por: Memoria Investigacion
Depositado el: 05 Abr 2016 16:00
Ultima Modificación: 05 Abr 2016 16:00
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