波浪条件下空投AUV入水数值模拟  

Numerical simulation of water entry of an air-dropped AUV under wave conditions

作　　者：赵庆新 丁忠军 ZHAO Qingxin;DING Zhongjun(National Deep Sea Center,Qingdao 266237,Shandong China;Environmental Science and Engineering College,Ocean University of China,Qingdao 266100,Shandong China;College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]国家深海基地管理中心,山东青岛266237 [2]中国海洋大学环境科学与工程学院,山东青岛266100 [3]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001

出　　处：《华中科技大学学报（自然科学版）》2021年第1期128-132,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：中国博士后科学基金资助项目(2019M652293);山东省博士后创新人才支持计划;青岛海洋科学与技术国家实验室鳌山科技创新计划资助项目(2016ASKJ15);国家重点研发计划深海关键技术与装备重点专项资助项目(2017YFC0306600);海洋公益性行业科研专项经费资助项目(201405036)。

摘　　要：针对波浪条件下空投自主式水下运载器(AUV)低速入水(伞降或低空空投)工况,采用计算流体力学方法进行数值模拟.计算了5套不同分辨率网格的AUV入水情况,证明了所采用的网格设置能很好地满足AUV入水数值模拟.分析了AUV在波峰、波谷等不同入水点处受力情况.入水点在波峰和波谷处AUV受力较大,且这两点处x方向上受力变化趋势是相反的,主要原因是水面上水质点圆周运动速度和迁移速度叠加导致的合速度方向不一致.分析了不同波浪参数和风速对AUV受力的影响,不同波浪参数和风速对AUV垂向受力影响极小,而对横向受力影响较大;相比于静水入水,波浪条件下入水受力更大.产生这些现象的主要原因是波面上水质点的横向运动.Under the wave conditions,the air-dropped autonomous underwater vehicle(AUV)’s low-speed water entry(parachute drop or low-altitude air-drop) was numerically simulated using the computational fluid dynamics(CFD) method.Five sets grids of AUV water entry with different resolution were calculated,proving that the adopted grid settings could well meet the numerical simulation of AUV water entry.The force changes of the AUV at different water inlets such as crests and troughs were analyzed.The AUV is the most stressed at the water crests and troughs,and the force change trend in the x direction at these two points is opposite.The main reason is the inconsistency of the combined velocity direction caused by superposition of circular motion speed and migration speed of water mass point on the water surface.The effect of different wave parameters and different wind speeds on the force of the AUV was analyzed.Different wave parameters and wind speed have little effect on the vertical force,but have a great influence on the horizontal force.Meanwhile,compared with the static water,the AUV is subject to greater water resistance under the wave condition.The main reason for these phenomena is the lateral movement of water mass points on the wave surface.

关 键 词：空投自主式水下运载器(AUV) 波浪条件 结构入水 流体力学 数值模拟 

分 类 号：U661.4[交通运输工程—船舶及航道工程]