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Investigating cross-wind stability of high-speed trains with large-scale parallel CFD |
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| Authors: | MM Fragner R Deiterding |
| Institution: | 1. Mechanical Engineering, Electrical and Energy Systems, BTU Cottbus - Senftenberg, Cottbus, Germanymoritz.fragner@b-tu.de;3. Aerodynamics and Flight Mechanics Research Group, Engineering and the Environment, University of Southampton, Highfield Campus, Southampton, United Kingdom |
| Abstract: | ABSTRACTThe 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) |