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Memorias de investigación
Communications at congresses:
Numerical Simulation of the Aerodynamic Behavior of High Velocity Trains under Synthetic Crosswinds of Different Shear and Turbulence Characteristics
Year:2014
Research Areas
  • Mechanical aeronautics and naval engineering
Information
Abstract
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.
International
Si
Congress
Second International Conference on Railway Technology: Research, Development and Maintenance,
960
Place
Ajaccio-Córcega (Francia)
Reviewers
Si
ISBN/ISSN
1759-3433
10.4203/ccp.104
Start Date
08/04/2014
End Date
11/04/2014
From page
1
To page
19
Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance, J. Pombo, (Editor), Civil-Comp Press, Stirlingshire, Scotland
Participants
  • Autor: Javier Garcia Garcia (UPM)
  • Autor: Jorge Muñoz Paniagua (UPM)
  • Autor: Angel Jimenez Alvaro (UPM)
  • Autor: Emilio Migoya Valor (UPM)
  • Autor: Antonio Crespo Martinez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Mecánica de fluidos aplicada a la Ingeniería Industrial
  • Grupo de Investigación: Termodinámica Aplicada a la Ingeniería Industrial (TAII)
  • Departamento: Ingeniería Energética
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