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Zigzag is one of the most crucial standard ship maneuvering tests performed to evaluate the yaw-checking ability. However, conducting experiments and studying the flow in free-running maneuver tests such as the zigzag test is associated with many complexities and restrictions. An alternative method is a simulation in a computational fluid dynamics environment. This study uses 6DOF direct 10/10 and 20/20 zigzag maneuver simulation to investigate conventional marine rudder profiles such as NACA 0025, IFS, HSVA, Wedgetail, and flapped on the course changing ability of a containership is investigated. The results show that the HSVA and NACA 0025 profiles have almost the same performance, but the IFS profile performed better than the two. Furthermore, rudder performance significantly improves with changes such as adding wedge or flap. Finally, comparing results with experimental data shows that numerical computations are suitable and accurate for predicting ship maneuverability. |
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