The hydrodynamic analysis of a new semi-small waterplane area twin hull （SWATH） suitable for various applications such as small and medium size passenger ferries is presented. This may be an attractive crossover con...The hydrodynamic analysis of a new semi-small waterplane area twin hull （SWATH） suitable for various applications such as small and medium size passenger ferries is presented. This may be an attractive crossover configuration resulting from the merging of two classical shapes： a conventional SWATH and a fast catamaran. The final hull design exhibits a wedge-like waterline shape with the maximum beam at the stem; the hull ends with a very narrow entrance angle, has a prominent bulbous bow typical of SWATH vessels, and features full stern to arrange waterjet propellers. Our analysis aims to perform a preliminary assessment of the hydrodynamic performance of a hull with such a complex shape both in terms of resistance of the hull in calm water and seakeeping capability in regular head waves and compare the performance with that of a conventional SWATH. The analysis is performed using a boundary element method that was preliminarily validated on a conventional SWATH vessel.展开更多
为研究小水线面双体船(small water-plane area twin hull,SWATH)的耐波性,在拖曳水池里开展了SWATH顶浪规则波中纵向运动模型试验,研究了航速和稳定鳍纵向位置变化对船体纵向运动性能的影响,以及波高变化对船体运动响应的非线性影响。...为研究小水线面双体船(small water-plane area twin hull,SWATH)的耐波性,在拖曳水池里开展了SWATH顶浪规则波中纵向运动模型试验,研究了航速和稳定鳍纵向位置变化对船体纵向运动性能的影响,以及波高变化对船体运动响应的非线性影响。试验结果表明:不同航速下,船体的垂荡传递函数和纵摇传递函数均随着波长变化呈现出双极值;不同航速时的垂荡传递函数的极值大小变化较小。稳定鳍纵向位置移动3.5%设计水线长时,对模型的运动响应影响不明显。随着波高增加,模型运动响应的非线性特征突出表现在共振区附近,在低速时更为显著。展开更多
文摘The hydrodynamic analysis of a new semi-small waterplane area twin hull （SWATH） suitable for various applications such as small and medium size passenger ferries is presented. This may be an attractive crossover configuration resulting from the merging of two classical shapes： a conventional SWATH and a fast catamaran. The final hull design exhibits a wedge-like waterline shape with the maximum beam at the stem; the hull ends with a very narrow entrance angle, has a prominent bulbous bow typical of SWATH vessels, and features full stern to arrange waterjet propellers. Our analysis aims to perform a preliminary assessment of the hydrodynamic performance of a hull with such a complex shape both in terms of resistance of the hull in calm water and seakeeping capability in regular head waves and compare the performance with that of a conventional SWATH. The analysis is performed using a boundary element method that was preliminarily validated on a conventional SWATH vessel.
文摘为研究小水线面双体船(small water-plane area twin hull,SWATH)的耐波性,在拖曳水池里开展了SWATH顶浪规则波中纵向运动模型试验,研究了航速和稳定鳍纵向位置变化对船体纵向运动性能的影响,以及波高变化对船体运动响应的非线性影响。试验结果表明:不同航速下,船体的垂荡传递函数和纵摇传递函数均随着波长变化呈现出双极值;不同航速时的垂荡传递函数的极值大小变化较小。稳定鳍纵向位置移动3.5%设计水线长时,对模型的运动响应影响不明显。随着波高增加,模型运动响应的非线性特征突出表现在共振区附近,在低速时更为显著。
