Dynamic characteristics of high-speed water entry in the environment of free water surface with crushed ice

ZHANG Rundong; DUAN Jinxiong; SUN Tiezhi; ZHANG Guiyong

doi:10.7638/kqdlxxb-2023.0191

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Dynamic characteristics of high-speed water entry in the environment of free water surface with crushed ice

更新时间：2026-07-27

- Dynamic characteristics of high-speed water entry in the environment of free water surface with crushed ice
- Vol. 42, Issue 1, Pages: 100-112(2024)
- 作者机构：
  
  1. 大连理工大学船舶工程学院,大连,116024
  2. 工业装备结构分析优化与CAE 软件全国重点实验室,大连,116024
- 作者简介：
- 基金信息：
- DOI：10.7638/kqdlxxb-2023.0191
  CLC： O352
- Published：2024
- 稿件说明：
移动端阅览
张润东, 段金雄, 孙铁志, 等. 自由面碎冰浮冰环境高速入水动力学特性[J]. 空气动力学学报, 2024, 42(1): 100−112.

ZHANG Rundong, DUAN Jinxiong, SUN Tiezhi, et al. Dynamic characteristics of high-speed water entry in the environment of free water surface with crushed ice[J]. 2024, 42(1): 100-112.
张润东, 段金雄, 孙铁志, 等. 自由面碎冰浮冰环境高速入水动力学特性[J]. 空气动力学学报, 2024, 42(1): 100−112. DOI： 10.7638/kqdlxxb-2023.0191

ZHANG Rundong, DUAN Jinxiong, SUN Tiezhi, et al. Dynamic characteristics of high-speed water entry in the environment of free water surface with crushed ice[J]. 2024, 42(1): 100-112. DOI： 10.7638/kqdlxxb-2023.0191.

摘要

为了研究碎冰环境下航行体高速入水过程中的空泡流场演化、航行体动力学响应以及碎冰载荷特性等规律，基于任意拉格朗日-欧拉方法建立了碎冰环境下的航行体高速入水流固耦合计算模型，并与高速入水试验、冰材料三点弯矩试验对比验证了方法的有效性和冰材料模型的可靠性。利用构建完成的高速入水流固耦合计算模型重点研究了碎冰以及碎冰间隙对航行体入水过程流场、动力学参数以及载荷的影响。研究结果表明：碎冰的存在对航行体入水后的水面抬升以及产生的飞溅演化存在抑制作用；碎冰环境下航行体的入水冲击载荷显著增加，其过程相较于无冰环境具有更大的动能损耗，但其砰击载荷持续时间与无冰环境入水过程一致；入水形成的飞溅冠连续性随着碎冰间隙的增加而增加，一定碎冰间隙范围内，航行体瞬时砰击载荷与间隙大小呈负相关关系，间隙足够大时，砰击载荷变化相对较小。

Abstract

In order to study the characteristics of vehicle water entry at high speed in the fragmented ice environment

such as the evolution of cavitation flow field

vehicle dynamic response and ice breaking load characteristics

a coupled computational model of fluid-structure interaction for high-speed water entry of the vehicle in fragmented ice environment was established based on the Arbitrary Lagrangian-Eulerian method (ALE). The high-speed water entry process of a round-nosed vehicle was investigated through experiments and numerical calculations

validating the effectiveness of the high-speed water entry computational method. By comparing the results of the three-point bending test of the ice material with the numerical results

the reliability of the ice material model used in the calculations was verified. Using the constructed coupled computational model of fluid-structure interaction

the high-speed water entry process of a vehicle in a fragmented ice environment was studied and analyzed. The research focused on the effects of fragmented ice and the gaps between ice fragments on the flow field

dynamic parameters

and loads during the water entry process of the vehicle.The results show that the presence of fragmented ice has an inhibitory effect on the water surface lift and the evolution of splashing after the water entry of the vehicle. In the fragmented ice environment

the impact load on the vehicle during water entry significantly increases

and the process involves greater kinetic energy loss compared to a non-ice environment. However

the duration of the slamming load is consistent with water entry in a non-ice environment. The continuity of the splash crown formed during water entry increases with an increase in the gaps between ice fragments. Within a certain range of ice gaps

the instantaneous slamming load on the vehicle shows a negative correlation with the size of the gap. When the gap is sufficiently large

the variation in the slamming load becomes relatively small.

关键词

Keywords

references

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