| High-performance dynamic positioning system is the key equipment of maintain the precise localization and stabilization in complex marine condition. And the Full-revolving propulsor is the key executive component of dynamic positioning system. The Full-revolving propulsor needs to adjust the rotate speed and rotation angle for keeping the stabilized of the platform in the complex marine condition. The Research on Hydrodynamic Performance and Structure Response of Full-Revolving Propulsor has the significance in evaluating the service performance and predicting the fatigue life.Based on the basic theory of computational fluid mechanics(CFD) and the fluid-structure interaction(FSI) theory, the hydrodynamics numerical simulation model and FSI simulation model of duct propeller is established. The open-water performance and the stress distribution and deformation characteristics are calculated. Then Compared the experimental result with calculate result, the correctness and reasonability of the theory and method in this article is certified.As the process of full-revolving, the quasi-steady simplified is used for establish the numerical simulation model. The hydrodynamic performance is solved in many discrete angles. The result coincides well with the experimental results. And then, the unsteady coupled calculation model is established with nested of two-layer sliding mesh. The variation of hydrodynamic performance in full-revolving process can be calculated continuously in this simulation model. The results show that the full-revolving has some influence in the hydrodynamic performance of propulsor.The hydrodynamic simulation model is established with three different factors of undersea objects which are approaching distance, dimensions and radial positions. The structure mechanic performance is solved in FSI model. Compared the results, the diameter of the object has the most important influence in mechanic performance of propeller. |
PDF Full Text Request