首升力体、首鳍/尾板与船体水动力相互干扰与匹配研究

Research on hydrodynamic interaction and matching of bow-lifting-body, fin/stern flap and hull

升力体技术已被CFD、缩比模型试验和实船试验证实,在零航速与有航速情况下均可减小船舶在波浪中的运动响应,提高船舶耐波性。该文以数值计算为主要技术手段,结合模型试验验证,开展了首升力体、首鳍/尾板与船体水动力相互干扰与匹配研究。首先,采用自由船模拖曳的数值模拟方法,开展了基于快速性的首升力体与船体位置匹配研究,获得了首升力体在船体上的较佳位置;其次,对首升力体加装首鳍,分析了首升力体、首鳍组合与船体水动力相互干扰,获得了复合初步船型方案;再次,对复合初步船型方案加装尾板,讨论了首升力体、首鳍、尾板组合与船体水动力相互干扰,获得了复合优化船型方案;最后,对复合优化船型方案在规则波中的运动响应进行数值预报与对比分析,并预报不规则波中的减摇效果。文中的研究成果可为后续首升力体在单体船上的应用提供技术支撑。

Lifting body technology was demonstrated-via computational fluid dynamics, scale-model tests, and full-scale at-sea trials-to provide reduced motions at zero and loiter speeds, which can improve ship seakeeping performance. With numerical calculation and scale-model test verification, this paper makes a research on hydrodynamic interaction and matching of bow-lifting-body, fin/stern flap and hull. The nu-merical simulation method of free ship model towed in still water is adopted. Research on position between bow-lifting-body and hull is carried out and the better position is obtained. With the fin installed on the bow-lifting-body, hydrodynamic interaction of bow-lifting-body, fin and hull is analysed. And the prelimi-nary scheme of hybrid monohull is obtained. With the stern flap installed on the preliminary scheme, hy-drodynamic interaction of bow-lifting-body, fin, stern flap and hull is discussed. And the optimization scheme of hybrid monohull is obtained. Finally, numerical prediction of motion responsein regular waves and comparative analysis of the optimization scheme are carried out. The stabilizing effect of hybrid monohull is also predicted. The results in the paper can be applied to the research of monohull with bow-lifting-body in the future.