基于滑移网格的翼身融合水下滑翔机水动力性能研究  

Hydrodynamic performance of blended-wing-body underwater glider based on sliding grid

作　　者：张贝 吕海宁[1,2,3] 杨建民[1,2,3] 张代雨 孙鹏飞 邓力文[1,2,3] 秦睿 夏茂臻 ZHANG Bei;LÜHai-ning;YANG Jian-min;ZHANG Dai-yu;SUN Peng-fei;DENG Li-wen;QIN Rui;XIA Mao-zhen(State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Institute of Marine Equipment,Shanghai Jiao Tong University,Shanghai 200240,China;Yazhou Bay Institute of Deepsea SCI-TECH,Shanghai Jiao Tong University,Sanya 572024,China;School of Ship and OceanEngineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China)

机构地区：[1]上海交通大学海洋工程国家重点实验室,上海200240 [2]上海交通大学海洋装备研究院,上海200240 [3]上海交通大学三亚崖州湾深海科技研究院,海南三亚572024 [4]江苏科技大学船舶与海洋工程学院,江苏镇江212003

出　　处：《船舶力学》2023年第11期1629-1640,共12页Journal of Ship Mechanics

基　　金：三亚崖州湾科技城科技专项资助(SCKJ-JYRC-2022-39);上海市战略性新兴产业重大项目;中央高校基本科研业务费专项资金资助;国家自然科学基金项目资助(51909110)。

摘　　要：提高升阻比是实现水下滑翔机低功耗和远距离航行的重要手段之一。借鉴航空领域翼身融合布局具有的高升阻比特性,本文将其应用于水下滑翔机设计过程,并开展基于滑移网格的翼身融合布局水下滑翔机(blended-wing-body underwater glider,BWBUG)水动力性能研究。首先,开展约束模式下的数值仿真,并定量给出各水动力参数随攻角的变化规律,确定该水下滑翔机的最优航行攻角,探明最优攻角下BWBUG压力分布规律。然后,从压力分布、流线分布及升力分布规律三个角度,阐明翼身融合构型能够提升升阻比的原因。在研究过程中发现:翼稍涡存在会导致翼稍处压力骤变严重、流线紊乱形成涡流,阻碍BWBUG升阻比的提升。这也从侧面论证了BWBUG加装翼稍小翼的必要性。本文的研究可以为后期BWBUG的结构改进及外形优化提供参考。Improving lift-drag ratio is an important means to realize low power consumption and long-dis-tance navigation of underwater gliders.The high lift-drag ratio characteristics of blended-wing-body layout in aviation field were applied to the design process of underwater gliders,and the hydrodynamic performance of a blended-wing-body underwater glider(BWBUG)was studied based on sliding grid.Firstly,the numeri-cal simulation under constraint mode was carried out,the variation law of hydrodynamic parameters with the angle of attack was given quantitatively,the optimal navigation angle of attack of the underwater glider was determined,and the pressure distribution law of BWBUG under the optimal angle of attack was found out.Then,the reason why the blended-wing-body layout can improve the lift-drag ratio is clarified from three as-pects:pressure distribution,streamline distribution and lift distribution.In the research process,it is found that the existence of wing vortex leads to serious sudden change of pressure at the wing,and disturbs the streamline to form vortex,which hinders the improvement of lift-drag ratio of BWBUG.The result also indi-rectly demonstrats that it is necessary to install winglet in BWBUG.This research will provide references for the structural improvement and shape optimization of BWBUG in the later stage.

关 键 词：翼身融合水下滑翔机 数值模拟 滑移网格 升阻比 翼稍涡 

分 类 号：TV131.2[水利工程—水力学及河流动力学]