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- W4312199844 abstract "Azimuth-Stern-Drive tugs have relatively simple hull form, great propulsive performance and maneuverability, and these characteristics provide study advantages over cargo ships and other ship forms. At the pre-processing stage, ship maneuvering prediction based on CFD codes solving the RANSE are with successful applications. However, the work of obtaining the hydrodynamic derivatives and maneuvering coefficients needs to deal with water surface effects and propeller rotating motion, which is very time-consuming. Thereby, it is necessary to explore an appropriate CFD application strategy for ship maneuvering prediction, to balance the numerical accuracy and time costs. In this paper, a self-built low-speed ship motion control experimental platform, ’QiuXin V’, modified from a harbor tug, is studied. Double-body assumption combined with discretized propeller method is adopted to perform series of virtual captive model tests and self propulsion tests, to obtain the hydrodynamic derivatives, thruster performance, and maneuvering coefficients in straight moving conditions, while the flow attributes associated with the ducted thruster are predicted with empirical methods. Moreover, a modified steering force model is introduced to improve the maneuvering model accuracy. Non-disturbance turning and zigzag maneuvers are performed and compared with free-running model tests. Results show acceptable model accuracy and confirm the feasibility of the adopted integrated method in predicting the ASD ship maneuverability under low-speed conditions." @default.
- W4312199844 created "2023-01-04" @default.
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- W4312199844 date "2023-02-01" @default.
- W4312199844 modified "2023-10-01" @default.
- W4312199844 title "Twin-screw ASD tug maneuvering prediction based on integrated CFD and empirical methods" @default.
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- W4312199844 doi "https://doi.org/10.1016/j.oceaneng.2022.113489" @default.
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