中文摘要：

等效水深截断是混合模型试验中非常重要的一步,合理的截断方案是模型试验成功的前提。现有的研究大多忽略对平台转动的考虑,该文在静态相似准则的基础上增加对平台转动的考虑,推导了系泊系统回复力和转矩的计算公式,建立了满足静态一致性的目标函数,进而采用粒子群算法进行等效水深截断优化设计。以某深水半潜式平台为例,首先在不考虑转动的情况下对其系泊系统进行等效截断,研究发现截断水深的变化对转矩的优化结果影响较大,从而证明了平台转动是应该考虑的。其次在考虑转动的情况下对系泊系统进行等效截断,通过水动力软件验证所优化的结果,证明该方法的可行性,为后续的等效水深截断优化设计的研究提供参考。

英文摘要：

The equivalent water depth truncation is a very important step in the hybrid model test,where reasonable truncation scheme is the premise of its success.Mostly,the existing researches ignored the rotation motion of platform.This paper derives the calculation formula of restoring force and torque in mooring system and sets up the objective function with considering the rotation which is based on the static similarity criterion,and then conducts a optimized design of equivalent water depth truncated with the particle swarm algorithm.Taking a deepwater semi-submersible platform as an example,firstly,the equivalent truncated mooring system is designed without considering the rotation,and the result shows that the variation of truncated water depth has observably influence on the optimized results of torque,which proves that the consideration of rotation is necessary.Secondly,the equivalent truncated mooring system is designed with considering the rotation,and the optimized result of this method is proved feasible by a hydrodynamic software.This research could provide a reference for the future optimized design of equivalent water depth truncated.