科研之友
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摘要
In order to develop novel ship types with lower resistance and better seakeeping performance, wave-piercing deep-V hull and two kinds of bow appendages, i.e., semi-submerged bow and water drop shaped bulbous bow, are developed in this paper. Rolling stability, resistance in calm water and seakeeping performance of various hulls with different bow appendages is investigated with CFD numerical simulation. In addition, experiments of tank models are conducted to further investigate ship seakeeping performance and validate the CFD algorithm. It is indicated that the deep-V hull has better roll and pitch stability than the round bilge hull. The deep-V hull also has better resistance performance in calm water than the round bilge hull in high speed conditions. The bulbous bow with water drop shape is helpful to reduce wave-making resistance and added resistance in waves of the deep-V hull at high speed. The semi-submerged bow has a more significant effect on improving longitudinal stability for the deep-V hull compared with the water drop shaped bulbous bow.
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