Numerical Analysis of Ship Airwake on a Simplified Frigate Model

The modelling ship airwake as well as ship air resistance calculation is of great importance in ships with flight deck.Especially with a flight deck at the stern, the airwake shaped by the superstructure aerodynamics generates a complex, asymmetrical and highly turbulent form in the helicopter operation area.Within the helicopter recovery and launch operations, the turbulent area makes pilot control difficult and can even cause loss of control.It is vital to accurately evaluate the turbulence occurring in the relevant region in order to increase operational efficiency, prevent possible accidents and reduce pilot workload.In this study, the effect of the flow regime in the flight deck airborne on a simple frigate shape has been examined with computational fluid dynamics using scale-resolving simulations.The results have been exhibited a remarkable agreement with the experimental data, and it has been agreed that the solution method could be a priority in ship airwake calculations.