Abstract:
For shipborne helicopters, one of the most dangerous operations at sea is the taking-off and landing operation on a ship. The complex airflow interaction on the surface of the ship is one of the main causes of this problem. Starting from the analysis of flow features of a single ship air wake, the vortex structures of the carrier and non-carrier ships as well as the flow features of the ship-helicopter coupled flowfield are summarized. Based on this, we then review the research development and main studies in the numerical simulation of ship surface air flow, which ranges from inviscid to viscous flow simulations, and from steady to unsteady numerical simulations. For the numerical study of ship-helicopter coupled flow, according to the numerical model and coupling method, the development process abroad is introduced, from the simplified actuator disk model to the complete helicopter model, from one-way coupling to two-way coupling; meanwhile the relevant work in China is also introduced. The content discussed in this study outlines the main methods for numerical simulations of the ship surface air flow and the ship-helo coupled flow, which can provide a reference for studies of the ship-helo coupled flowfield and the aircraft-ship adaptability.