Simulations of high speed trains

Simulations of high-speed trains under different cross-wind configurations

Today, in Europe, the cross-wind stability of high speed trains must be validated by wind tunnel tests. Wind tunnel tests are usually performed on 1:25 scale models of 2-3 car trains. The legitimacy of the results can be questioned as:

1) The Reynolds numbers are smaller than at full scale,

2) The relative motion of the trains is ignored as the models are static,

3) The air inlets and outlets are not taken into account, and

Simulating atmospheric boundary layer for trucks

The application of an atmospheric boundary layer to evaluate truck aerodynamics in CFD

Breaking records using digital aero development

The Mercedes-Benz Concept IAA

When the Mercedes-Benz management decided in late summer 2014 to build the Concept IAA (Intelligent Aerodynamic Automobile) show car for the 2015 Frankfurt Automobile Show, it was clear that this would be a very challenging year for all involved groups like stylists, CAD-designers, manufacturers and aerodynamic engineers.