An analysis was carried out for flow characteristics around a vehicle-bridge system
consisting ofGerman ICE ( intercity-express) vehicle and standard simply-supported bridge under cross
wind. Based on the two-dimensionalReynolds averaged incompressible Navier-Stokes equations, the
RNG (renormalization group) turbulencemodelwas used in the numerical simulation. Triangulargrid
and quadrilateral grid were used to divide the computational domain, the finite volume method was
adopted to discretize the governing differential equations, and the pressure-velocity field was coupled
using the SIMPLE (semi-implicitmethod for pressure-linked equations) algorithm. Furthermore, the
research results of driven cavity flowswere applied to the analysis of flow characteristics around the
vehicle-bridge system considering the wind-break wall effec.t The analysis shows that the wind-break
wall of a high-speed railway bridge has the similar vortex characteristics of driven cavity flows in
preventingwind.