Numerical And Experimental Research On Hydrodynamic Characters Of Shuttle Submersible

Marine resources exploitation has been full developing for many years, which means a vital sense to human survival and development in the future, and the suttle submersible mainly studied in the paper is a type of Human Occupied Vehicle(HOV) and also a powerful tool for marine resource exploitation. Most countries in the world have their own ocean development plan, various types of HOV have been designed and built one by one, and several developed countries had built their own multi-functioned HOV for decades which have the ability to descend 6000 meters to deep sea. The Dragon HOV designed and built by our country can already descend 3700 meters, which means that deep-sea-robot independent design ability and foundational ocean science development of our national research group had made a great progress, and those groups had got outstanding achievements.Shuttle submersible is quiet different from general submarine with more complex shape, more changeable movement and flexible maneuverability. This paper is aimed on the dynamic characters of a type of complex shape Suttle submersible by experiments and numerical simulation, also the typical manipulate simulations were carried out on computers, those typical motions are very important in submersible design. The research work in this paper has a practical sense for similar type submersible and layout of the HOV design in the future.The main contributions and achievements of the research work are summarized below:1. Hydrodynamics of the shuttle submersible with different appendage position are measured through physical model tests in towing tank with PMM, the hydrodynamic variation of the HOV with different appendage position provide basic data for the optimization design work, also can be looked as an important guiding sense to multi-body HOV design and cooperative work between submersibles.2. Towing tests with large attack angel and large drift angel, and rotating tests are carried out in numerical tank by Fluent software. The simulation validation is verified by comparing the physical model test results and simulation results, a numerical multi-domain towing tank and reference frame rotating tank are proposed and proved time saving and efficency.3. The inertia hydrodynamics of the shuttle submersible were determined not only by the physical model tests but also by numerical simulation method, and among the numerical simulation, the potential flow solver, non-viscous, and viscous solver were considered and used in order to reflect the influence of viscous and vortex to inertia hydrodynamic. The inertial hydrodynamics using viscous solver method is most close to model test value.4. A simple second-order hydrodynamic model was established by the author by analyzing model test data and numerical data. The hydrodynamic equations of this model were simplified according to the shuttle submersible shape, motion, maneuver, and control mothed. This model is also suitable in hydrodynamic forecast of complex shape submersible, and the efficiency of hydrodynamic forecost is six times saving compared to normal numerical methods.5. The numerical tank proposed in the paper is applied and lots of simulations are carried out in analyzing hydrodynamic characteristics of the shuttle close to deep-sea structures, the variation of hydrodynamics are very important in HOV butt joint action.