水动力对海冰-结构物相互作用影响的研究
Research on Hydrodynamic Force Influence on Ice-Structure Interaction
贾子琛 1孙哲 1赵禹 2张桂勇 3金朝光1
作者信息
- 1. 大连理工大学船舶工程学院,大连 116024
- 2. 中国船舶集团有限公司 第七一三研究所,郑州 450002
- 3. 大连理工大学船舶工程学院,大连 116024;高新船舶与深海开发装备协同创新中心,上海 200240
- 折叠
摘要
海冰与极地船舶碰撞是影响船舶航行和作业安全的重要因素.由于碰撞发生在水面附近,水动力作用不可忽视,需考虑结构物-冰-水的耦合作用.论文进行了海冰与固定圆柱体之间水动力相互作用的试验,并改变海冰的速度、尺寸和形状这3个参数用CFD-FEM方法进行数值模拟,分析冰所受水动力与碰撞力峰值的差以及碰撞过程中冰附加质量的变化.研究结果表明:数值计算结果与试验数据吻合较好;在海冰-结构物碰撞过程中,水动力对冲击力辐值的影响随海冰速度的增大而增大,随海冰尺寸和截面多边形边数的增加而减小;在冲击力峰值附近区域,海冰附加质量呈先增大后减小的态势.
Abstract
The interaction between sea ice and ocean structures affects the safety of polar ships.Since the collision occurs near the water surface,the hydrodynamic effect cannot be ignored,and the structure-ice-water coupling should be considered during the collision.The experiment of hydrodynamic interaction between the sea ice and the fixed cylinder is carried out,which is numerically simulated with the CFD-FEM method.The difference between peaks of hydrodynamic force and collision force as well as the change of additional mass of the ice are analyzed.The results show that the CFD-FEM calculation results are in good agreement with the experimental results.In the process of sea-ice structure interaction,the hydrodynamic force has a certain influence on the impact force,and it is increased with the velocity and decreased with the size and number of polygonal edges.The additional mass of the ice is increased first and then decreased near the peak collision force.
关键词
CFD-FEM方法/海冰/水动力/附加质量Key words
CFD-FEM method/sea ice/hydrodynamic forces/additional mass引用本文复制引用
基金项目
国家自然科学基金(52192692)
国家自然科学基金(52171295)
中央高校基本科研业务费专项(DUT22LK17)
出版年
2024
NETL
NSTL
万方数据