Numerical Simulation of Underwater Vehicle Wake Field

In this work, combining the Reynolds Averaged Navier-Stokes(RANS) equation with the turbulence model RNG k-ε method is used to calculate the flow field of the model adopted simple geometries as submerged objects. The flow field characteristics of the model surface pressure, velocity distribution, vortex core region distribution features and evolution of vortex in the wake during the straight movement state are calculated. The calculation results are compared with the experimental results well. The vortex-wake continues to propagate in the direction behind the vehicle. Therefore, the vortex wake can transmit in the water for a long distance which represents an invaluable source of information for detection and tracking underwater.