摘要
研究重力作用下不同底升角的单圆锥体和双圆锥体垂向入水过程中的砰击压力分布。用OpenFOAM建立基于黏流理论的CFD数值模型,在锥体表面设置监测点,得到不同速度下圆锥体入水时的自由液面形状和锥面上的压力分布,并分析它们与圆锥体底升角和入水速度的关系。研究结果表明:重力和底升角对砰击压力有较为明显的影响;在入水过程中双圆锥体之间相互干扰,锥面上压力增大。
Water entry of a three-dimensional cone and double cones at various dead rise angles is investigated with gravity effect considered. Based on viscous flow theory, a CFD numerical model is established with the software OpenFOAM. Monitoring points are set up on the surface of the cone. Pressure distribution on the surface of the cone and the free surface shape are calculated with different entry speed and dead rise angles. It is concluded that the gravity and dead rise angle will exert noticeable effects on the numerical results, and the gravity will become prominent as the time goes on. There is mutual interference between two cones, so as to increase the pressure on the surface of cones.
作者
孙士艳
魏姗姗
SUN Shiyan;WEI Shanshan(School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China)
出处
《中国造船》
EI
CSCD
北大核心
2022年第2期84-94,共11页
Shipbuilding of China
关键词
OPENFOAM
双锥体
重力影响
黏流
入水砰击
software OpenFOAM
double cones
viscous flow theory
effect of gravity
water entry
