为船体入水受冲击研究提供有效手段，提出流固耦合分析下的船体高速入水冲击数值模拟方法。该方法使用ALE算法对船体高速入水冲击展开流固耦合分析，并将船体看作圆筒形，建立船体有限元数值模拟模型，通过设置船体高速入水条件后，利用流固耦合分析方法获得船体高速入水冲击数值模拟结果。实验结果表明，船体高速入水瞬间，会产生巨大的加速度并传递到船体结构上，在加速度冲击作用下，船体结构排开水面，水介质受到船体结构挤压水平面会上升并产生水花飞溅现象，并在船体结构入水后形成超空泡；船体结构接触到水面时，其承受的冲击荷载最大，加速度曲线呈直线上升趋势。
A numerical simulation method for high-speed underwater impact of ship hull under fluid structure coupling analysis is proposed, providing an effective means for studying the impact of ship hull entering water. This method uses the ALE algorithm to conduct fluid structure coupling analysis on the high-speed water inflow impact of the ship hull, and treats the ship hull as a cylindrical shape. A finite element numerical simulation model of the ship hull is established. After setting the high-speed water inflow conditions of the ship hull, the simulation results of the high-speed water inflow impact number of the ship hull are obtained through the fluid structure coupling analysis method. The experimental results show that at the moment when the ship enters the water at high speed, a huge acceleration is generated and transmitted to the ship structure. Under the impact of acceleration, the ship structure is discharged from the water surface, and the water medium is squeezed by the ship structure, causing the horizontal plane to rise and produce water splashes. After the ship structure enters the water, super cavitation is formed. When the hull structure comes into contact with the water surface, it bears the maximum impact load, and the acceleration curve shows a straight upward trend.
2023,45(19): 60-63 收稿日期：2023-03-26
DOI：10.3404/j.issn.1672-7649.2023.19.011
分类号：U441
作者简介：迟铁(1992-),男,博士,研究方向为船舶入水抨击问题
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