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Characteristics of flow field on the flight deck for the frigate ship are complex. In order to find an accurate and worthy method to simulate the ship airwake, isolated simplified frigate ship, SFS2, was calculated by CFD(Computational Fluid Dynamics). The different turbulence models, SKE, MMK and DES, were used to simulate the flow field. CFD results were used to analyze the characteristics of flow field around the flight deck through compared with the experimental data in wind tunnel. The existence of horseshoe vortex on the surface of the flight deck was verified. Vortices separated off the top of the hangar and reattached on the flight deck. The results show that the DES model calculation results are more accurate than SKE and MMK model, which is suitable for engineering applications.

Airwake characteristics simulations with different turbulence models