波浪环境下带助浮装置航行体落水冲击流场及运动特性研究

王占莹; 权晓波; 段金雄; 孙铁志

doi:10.11883/bzycj-2023-0260

波浪环境下带助浮装置航行体落水冲击流场及运动特性研究

doi: 10.11883/bzycj-2023-0260

王占莹^{1, 2,},
权晓波^{1, 3, ,},
段金雄⁴,
孙铁志⁴

1.
哈尔滨工程大学船舶工程学院，黑龙江哈尔滨 150001
2.
北京宇航系统工程研究所，北京 100076
3.
中国运载火箭技术研究院，北京 100076
4.
大连理工大学船舶工程学院工业装备结构分析优化与CAE软件全国重点实验室，辽宁大连 116024

基金项目: 国家自然科学基金面上项目(52071062)

详细信息

作者简介:
王占莹（1983－　），女，博士，高级工程师，zhanyingwang123@163.com

通讯作者:
权晓波（1976－　），男，博士，研究员，quanxiaobo147@163.com

中图分类号: O383; O368
计量
- 文章访问数: 93
- HTML全文浏览量: 26
- PDF下载量: 39
- 被引次数: 0
出版历程
- 收稿日期: 2023-08-02
- 修回日期: 2024-06-27
- 网络出版日期: 2024-06-27
- 刊出日期: 2024-11-15

Study on the impact flow field and the motion characteristics of vehicle with boost floatation aids falling on the water in a wave environment

WANG Zhanying^{1, 2
,},
QUAN Xiaobo^{1, 3
, ,},
DUAN Jinxiong⁴,
SUN Tiezhi⁴

1.
College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, Heilongjiang, China
2.
Beijing Institute of Astronautical System Engineering, Beijing 100076, China
3.
China Academy of Launch Vehicle Technology, Beijing 100076, China
4.
State Key Laboratory of Structural Analysis and Optimization for Industrial Equipment and CAE Software, School of Naval Architecture, Dalian University of Technology, Dalian 116024, Liaoning, China

摘要

摘要: 为探究波浪环境下带助浮装置航行体下落冲击过程中的流场以及运动演化特性，基于CFD (computational fluid dynamics) 数值模拟技术，在方法上耦合了VOF (volume of fluid) 多相流模型、k-ω SST湍流模型、Schnerr-Sauer空化模型以及Stokes五阶非线性波理论，建立了一套针对入水冲击问题的数值计算方法，并采用速度边界法进行造波。经验证，试验与数值结果在下落位移上对比差异较小，该数值方法可靠有效，且造波结果与Stokes五阶非线性波理论吻合较好。然后，基于构建的数值方法，在不同波浪环境下对带助浮装置航行体下落入水冲击过程进行了数值模拟，计算带助浮装置航行体冲击过程的位移、速度、加速度以及助浮装置受力情况，分析冲击过程中航行体的运动学参数、动力学参数以及入水空泡流场演化过程，总结了波浪环境下带助浮装置航行体的入水冲击特性。结果表明，波浪环境对下落冲击过程的影响主要体现在运动衰减段，水平方向的冲击相较于垂直方向的冲击受到波浪环境的影响要大得多，不同海况对航行体的水平冲击造成的影响主要是通过影响入水空泡的形成与溃灭过程实现的。
- 带助浮装置航行体 /
- 入水冲击 /
- 冲击载荷 /
- 波浪载荷
Abstract: Based on the computational fluid dynamics (CFD) numerical methods, a set of reliable and effective numerical methods for investigating the flow field and evolution characteristics of motion during the process of falling vehicle with boost floatation aids impacting the water in wave environment was established coupled with volume of fluid (VOF) multiphase flow model, k-ω SST turbulence model, Schnerr-Sauer cavitation model and Stokes fifth-order nonlinear wave theory. The numerical simulation of the process of falling into water under a horizontal cylinder showed that the difference between the experimental results and the numerical results in falling displacement was small, which verifies the validity of the numerical method of water falling impact. The wave generation results obtained by the velocity boundary numerical wave generation method were in good agreement with Stokes fifth-order nonlinear wave theory. Based on the established numerical method, numerical simulation was carried out on the water falling impact process of the vehicle with boost floatation aids under different wave sea states. The kinematic and dynamic parameters of the vehicle and evolution of water-entry cavity flow field during the impact process were analyzed, and the water falling impact characteristics of the vehicle with boost floatation aids under wave environment were summarized. The results show that the impact of wave environment on the falling impact process is mainly reflected in the motion attenuation section. The horizontal impact is much more affected by the wave environment than the vertical impact and the influence of different sea conditions on the horizontal impact of the vehicle is mainly achieved by influencing the formation and collapse of the water-entry cavity. The calculated displacement, velocity, acceleration and boost floatation aids force during the impact process of vehicle with boost floatation aids can be provided as a reference for the structural design and safety test guidance of the vehicle recovery under wave environment.
- vehicle with boost floatation aids /
- water-entry impact /
- impact load /
- wave load

HTML全文

图 1 圆柱入水空泡形态试验与数值结果对比

Figure 1. Comparison of experimental and numerical results of cylindrical water-entry cavitation

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图 2 圆柱下落冲击过程质心位置时历曲线对比

Figure 2. Comparison of the time history curves of centroid position during cylinder falling impact

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图 3 数值造波水池几何模型

Figure 3. Numerical wave pool geometry model

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图 4 浪高仪布置情况

Figure 4. The layout of waveprobes

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图 5 t=35 s时刻计算域中波浪波高分布情况

Figure 5. Wave height distribution in the calculation domain at time t=35 s

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图 6 x=20 m处与x=40 m处波高时历曲线

Figure 6. Time history curve of wave height at x=20 m and x=40 m

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图 7 计算模型几何尺寸

Figure 7. The geometric dimensions of computational model

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图 8 计算域设置与网格划分方案

Figure 8. Computing domain setup and meshing scheme

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图 9 助浮装置转动方向示意与转动角度变化时历曲线

Figure 9. Boost floatation aids rotation direction and time history curve of rotation angle

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图 10 航行体初始下落位置

Figure 10. Initial drop position of vehicle

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图 11 网格无关性计算结果

Figure 11. Grid independence calculation results

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图 12 航行体下落-下沉-上浮过程

Figure 12. Vehicle fall-sink-rise process

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图 13 航行体位移时历曲线图

Figure 13. Time history curves of vehicle’s displacement

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图 14 航行体速度时历曲线

Figure 14. Time history curves of vehicle’s velocity

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图 15 航行体冲击下落过程速度方向矢量

Figure 15. Velocity vectors of vehicle during impact fall process

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图 16 航行体转角时历曲线

Figure 16. Time history curve of vehicle’s angle

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图 17 带助浮装置航行体加速度时程曲线

Figure 17. Acceleration time history curve of vehicle with boost floatation aids

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图 18 入水空泡发展过程

Figure 18. Development process of water-entry cavity

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图 19 助浮装置受力时历曲线

Figure 19. Time history curves of boost floatation aids’ force

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图 20 压力监测点布置位置

Figure 20. Location of pressure monitor points

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图 21 监测点压力时程曲线

Figure 21. Time history curves of the pressure at monitor points

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图 22 不同工况下航行体下落-下沉-上浮过程

Figure 22. Vehicle fall-sink-rise process under different working conditions

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图 23 不同工况下航行体位移时历曲线

Figure 23. Displacement history of the vehicle under different working conditions

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图 24 不同工况下航行体速度时历曲线

Figure 24. Velocity history of vehicle under different working conditions

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图 25 不同工况下带助浮装置航行体加速度时历曲线

Figure 25. Acceleration time history curves of vehicle with boost floatation aids under different working conditions

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图 26 不同工况下入水空泡流场中截面示意图

Figure 26. Schematic diagram of mid-profile in the flow field of water-entry cavity under different working conditions

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表 1 工况设置

Table 1. Working conditions setting

工况波高/m 波周期/s

1 0.50 3.0
2 0.75 3.0
3 1.00 3.0
4 1.25 3.0
5 0.00 /

下载: 导出CSV

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