四体无人艇的片体布局优化
Multi-body layout optimization of an unmanned quadramaran
王宁 1宋佳麟 2杨奇麟2
作者信息
- 1. 大连海事大学 轮机工程学院,辽宁 大连 116026;大连海事大学 水路交通控制全国重点实验室,辽宁 大连 116026;大连海事大学 大连市智能船舶绿色动力控制与测试重点实验室,辽宁 大连 116026
- 2. 大连海事大学 轮机工程学院,辽宁 大连 116026
- 折叠
摘要
针对四体无人艇的航行阻力性能受其分布式片体横、纵间距耦合影响的问题,通过综合对比多种片体布局方案在不同航速工况下的阻力系数,对自主设计的四体无人艇的片体布局进行优化.首先,构建多种布局方案,基于计算流体力学数值模拟方法与Fluent求解器对其三种航速工况下的静水阻力系数进行对比分析;其次,设计综合阻力系数评价函数,选取阻力性能最优的片体布局方案;最后,通过对比优化前后的航行兴波高度与片体表面压力进一步验证布局优化对整船航行效果的改善作用.仿真结果表明,片体的纵间距是影响整船航行阻力的主要因素,片体布局优化后的综合阻力系数较优化前减小约12.9%,并且能够有效减小无人艇的航行兴波高度与片体表面压力.
Abstract
To address the issue that navigational drag perform-ance of an unmanned quadramaran is affected by both longitu-dinal and lateral separations of multi-bodies,the entire layout of an self-designed unmanned quadramaran is optimized by comprehensively comparing drag coefficients of various schemes under different navigation conditions.Firstly,a vari-ety of layout schemes are constructed to compare and analyze calm-water resistance coefficients under three different speed conditions by using computational fluid dynamics numerical simulation methods and Fluent solver.Secondly,a compre-hensive resistance coefficient evaluation function is designed to optimize the layout scheme considering resistance perform-ance.Finally,the improvement effect of layout optimization on the overall navigation performance is further verified by com-paring the wave height and surface pressure before and after optimization.Simulation results show that the longitudinal dis-tance is the main factor affecting the overall navigation resist-ance of quadramaran,while the optimized layout of multi-bodies reduces the comprehensive resistance coefficient by 12.9%compared to that before optimization,thereby effec-tively reducing wave height and surface pressure of the un-manned quadramaran during navigation.
关键词
四体无人艇/片体布局优化/计算流体力学(CFD)/Fluent求解器Key words
unmanned quadramaran/multi-body layout opti-mization/computational fluid dynamics(CFD)/Fluent solver引用本文复制引用
出版年
2024
NETL
NSTL
万方数据