摘要
基于雷诺时间平均Navier-Stokes方程和流体体积函数法,对有相同初速度、不同入水角的UUV在相同高度的跌落入水进行数值模拟。分析垂向载荷、UUV周围压力和流动随入水角的变化,并研究UUV入水过程中的运动状态。结果表明:UUV的垂向载荷在其入水过程中存在多个峰值,砰击力系数随着入水角的增加而非线性减小,尾部先入水时的砰击力更大。
Based on the Reynolds-Averaged Navier-Stokes equation and volume of fluid method,the water-entry of a free fall unmanned underwater vehicle(UUV)with the same initial velocity and different water-entry angle at the same height is studied numerically.The variations of the vertical force,pressure and the flow field around the UUV with water-entry angle are analyzed.The motion states of the UUV in the water entry process are also studied.The results show that the vertical force of the UUV has several peaks during the free fall water-entry process.The slamming coefficient decreases nonlinearly with the increase of water-entry angle.The slamming force is greater when the stern enters the water first.
作者
李文颉
郭睿男
昝英飞
LI Wenjie;GUO Ruinan;ZAN Yingfei(No.703 Research Institute of CSSC,Harbin 150078,China;College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《船舶工程》
CSCD
北大核心
2021年第10期160-165,共6页
Ship Engineering
基金
黑龙江省博士后基金(LBH-Z19054)。
关键词
无人水下航行器
入水
砰击力系数
入水角
unmanned underwater vehicle(UUV)
water-entry
slamming coefficient
water-entry angle
