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Memorias de investigación
Research Publications in journals:
Evaluation of RANS, SAS and IDDES models for the simulation of the flow around a high-speed train subjected to crosswind
Year:2017
Research Areas
  • Engineering
Information
Abstract
This paper compares the performance of EARSM, SAS and IDDES turbulence models for the aerodynamic problem of a high-speed train subjected to crosswind. These approaches, as well as the effect of the curvature correction for conventional RANS models (standard k ? ? and k ? ? SST), are analyzed in terms of aerodynamic force coefficients and pressure distribution at the train surface, time-averaged and instantaneous flow structures, vortices location and viscosity ratio, and computational cost. The turbulence models are also evaluated against wind tunnel experimental data and published numerical results. It has been shown that SAS, which is a turbulence model that is formally a RANS model, can allow the generation of LES content, and so it is found to be a good alternative for LES or DES in this aerodynamic problem. Besides, when a significant save in computational cost is required, EARSM has shown to give reliable results. Consequently, this turbulence model results into a good choice for expensive aerodynamic optimization problems as it balances computational cost and prediction accuracy.
International
Si
JCR
Si
Title
Journal of Wind Engineering And Industrial Aerodynamics
ISBN
0167-6105
Impact factor JCR
2,049
Impact info
Volume
171
Journal number
From page
50
To page
66
Month
SIN MES
Ranking
Participants
  • Autor: Jorge Muñoz Paniagua (UPM)
  • Autor: Javier Garcia Garcia (UPM)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Ingeniería Energética
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)