Abstract:
Objective In order to forecast a ship's maneuverability more realistically, it is necessary to conduct the direct simulation of the full-scale ship's maneuver.
Methods In this paper, based on overset grid technology, calculations of the full-scale ship towing, supporting propeller open water and full-scale ship self-propulsion are first produced, and the calculations are then compared with the experimental results. On this basis, numerical simulations of the full-scale ship's 10/10 standard zigzag maneuvers are carried out to analyze changes in the ship's motion, hydrodynamics, flow field and vortex structure.
Results The self-propulsion results show that the numerical method used in this paper is reliable. The torque coefficient decreases due to the propeller scale effect. When maneuvering, the ship's motion is more intense. Due to the interference of the ship-rudder system, the post-propeller vortex structure is more complicated and produces a certain angle of offset with the change in drift angle.
Conclusions The ship's motion, hydrodynamic characteristics and flow field information can be accurately obtained using this numerical method to simulate full-scale ship maneuvers, it can be used as an effective pre-evaluation tool and provide references for ship design.
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