基于均匀试验设计的深V船型阻力与耐波性优化

Optimization of Resistance and Seakeeping of Deep-V Ship Based on Uniform Test Design

以某深V型船的总阻力、波浪增阻及重心处的加速度为优化目标,对船型的局部型线进行优化设计。在满足总体布置要求的前提下,以底部斜升角、折角线长度为优化对象,通过均匀试验设计的方式,形成9个试验模型;采用经验公式和切片法分别对船型的航行阻力以及波浪中的运动响应进行评估;以简单易用的多项式形成近似模型,采用智能优化算法在样本空间内寻找最优点,提出适合于深V船型水动力性能的多目标优化设计方案。以多目标等权重为目标,得到局部最优解,提出基于均匀试验设计的阻力及耐波性能多目标方法。研究结果可为深V型船型线设计及水动力性能优化提供新的思路。

Taking the total resistance,wave resistance and acceleration at the center of gravity of a deep V-shaped ship as the optimization objectives,the local profile of the ship is optimized.On the premise of meeting the requirements of the overall layout,the bottom slope angle and the length of the kink line are optimized,and 9test models are formed through uniform test design.The empirical formula and the slicing method are used to determine the sailing resistance of the ship and the mid-wave respectively,and the motion response of the ship is evaluated.An approximate model is formed with a simple and easy-to-use polynomial,and an intelligent optimization algorithm is used to find the best advantage in the sample space.A multi-objective optimization design scheme suitable for the hydrodynamic performance of deep-V ships is proposed.Taking multiple goals and equal weights as the goal,the local optimal solution is obtained.A multi-objective multi-disciplinary method based on uniform test design for resistance and seakeeping performance is proposed,which provides a new idea for deep V-shaped ship line design and hydrodynamic performance optimization.