Study on Key Techniques of Submarine Maneuvering Hydrodynamics Prediction Using Numerical Method

In order to solve the problem of mesh generation and turbulence model choosing in the course of predicting submarine maneuvering hydrodynamics using numerical method, did some simulations with the SUBOFF submarine model. With different distances between first layer of cell and model surface, different mesh quantities and different turbulence models, numerically calculated the model maneuvering hydrodynamics. Get the suitable value rang of distance between first layer of cell and model surface, the mesh astringency characters and relatively better turbulence model using in predicting submarine maneuvering hydrodynamics using numerical method, and also compared computational results and experimental results in variety discussed cases. It indicates that in prediction of submarine maneuvering hydrodynamics using numerical method: there are suitable value ranges of distance between first layer of cell and model surface for all forces and moments prediction; the longitudinal forces prediction requires higher mesh quantity while prediction of lateral forces and moments require lower mesh quantity; the standard k-¿ turbulence model can get more accurate results compared with experimental results, and it´s the relatively suitable turbulence model in prediction of submarine maneuvering hydrodynamics. Once choose suitable mesh generation and turbulence model, numerical method can get feasible accuracy prediction results of submarine maneuvering hydrodynamics, and it provides a new approach to submarine maneuver-ability design and optimization.