Memorias de investigación
Ponencias en congresos:
Numerical Simulation of the Aerodynamic Behavior of High Velocity Trains under Synthetic Crosswinds of Different Shear and Turbulence Characteristics
Año:2014
Áreas de investigación
  • Ingeniería mecánica, aeronaútica y naval
Datos
Descripción
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.
Internacional
Si
Nombre congreso
Second International Conference on Railway Technology: Research, Development and Maintenance,
Tipo de participación
960
Lugar del congreso
Ajaccio-Córcega (Francia)
Revisores
Si
ISBN o ISSN
1759-3433
DOI
10.4203/ccp.104
Fecha inicio congreso
08/04/2014
Fecha fin congreso
11/04/2014
Desde la página
1
Hasta la página
19
Título de las actas
Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance, J. Pombo, (Editor), Civil-Comp Press, Stirlingshire, Scotland
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Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • 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