Parallel CFD Computations of Cross-Wind Stability on an ICE2 Train

Paper in proceeding, 2006

Many rail way accidents have been reported in the last two decades due to strong side winds. Thus, a suitable design for the new generation of the high speed trains should take into account the resistance to the strong side winds. To help engineers to achieve optimum design, both the time-averaged and the instantaneous flow structures around the train should be understood. The flow around high speed ICE2 train subjected to a 30 degree side wind yaw angle is solved using large eddy simulation (LES). The Reynolds number used in the simulation is 200000 based on the freestream velocity and the height of the train. Both the time-averaged and the instantaneous flow are investigated. The simulation gives a full picture of the wake behavior and its impact on the train aerodynamics.