Investigating cross-wind stability of high-speed trains with large-scale parallel CFD

ABSTRACT

The side-wind loading on a simplified train model at scale 1:25 is investigated by parallel large eddy simulation (LES) with incompressible solvers from the OpenFOAM package and a novel dynamically adaptive, parallel LES-type lattice Boltzmann method (LBM) implemented in our own AMROC framework. It is found that the new LBM code provides more accurate time-averaged force predictions, while compute times are reduced.

KEYWORDS:

• Train aerodynamics
• large eddy simulation (LES)
• lattice Boltzmann method (LBM)
• adaptive mesh refinement
• pressure-correction method
• delayed detached eddy simulation (DDES)

Disclosure statement

No potential conflict of interest was reported by the authors.