小水线面双体船支柱斜度对其耐波性能影响分析

Influence analysis of the seakeeping performance for SWATH with inclined strut

基于三维势流理论,本文研究了不同支柱倾斜角度的小水线面双体船在设计航速下的耐波性能。将规则波中的运动响应幅值函数与海浪谱结合得到运动统计有义值。对比不同支柱倾斜角度的频率响应曲线,发现在相同海况条件下随着支柱倾斜角度增加,垂荡和纵摇峰值降低。结果表明,通过倾斜支柱可增加船舶运动的附加质量和阻尼,削弱频率响应曲线共振峰。

Based on the three-dimensional potential flow theory, this paper studied the seakeeping performance of Small Water-plane Area Twin Hull（SWATH） with different inclined struts at the design speed. Combining the motion response amplitude function in regular wave with wave spectrum, we get the significant statistics of motion response. By comparing the frequency response curves of different inclined struts under the same sea state condition, we find that as inclined angle increases, the peak value of pitch and heave reduces. It turns out that inclined strut increases the added mass and damping of ship motion, weaken the resonance peak.