Investigation on the wake of a single-box girder in sinusoidal oscillating flow

The wake of a single-box girder in sinusoidal oscillating flow is studied by three-dimensional large-eddy simulations (3D LES). The validation of numerical simulation is verified by active-controlled wind tunnel experiments. The mean and fluctuating velocity, as well as the vortex shedding distance in the sinusoidal oscillating flow are discussed. The fluctuating velocity near the wake increases with the increasing oscillation amplitude, however it is distribution period independent of oscillation amplitude. The vortex shedding distance decreases as the oscillation frequency increases, meanwhile, the oscillation amplitude has no effect on it.