舰船纵摇突变对舰面流场的影响

李通; 王逸斌; 赵宁

doi:10.7638/kqdlxxb-2019.0136

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舰船纵摇突变对舰面流场的影响

研究论文 | 更新时间：2026-05-28

- 舰船纵摇突变对舰面流场的影响
- Influence of sudden change in pitching motion on ship flow field
- 空气动力学学报 2021年39卷第3期页码：80-89
- 作者机构：
  
  南京航空航天大学非定常空气动力学与流动控制工业和信息化部重点实验室,南京,210016
- 作者简介：
  
  李通（1995-），男，陕西宝鸡人，博士生，研究方向：计算流体力学，舰面流场数值分析. E-mail：lee_tong@foxmail.com
  赵宁*（1963-），山东人，教授，博导，研究方向：计算流体力学. E-mail：zhaoam@nuaa.edu.cn
- 基金信息：
  
  国家数值风洞工程;江苏高校优势学科建设工程资助项目
- DOI：10.7638/kqdlxxb-2019.0136
  中图分类号： U674;V211.3
- 纸质出版：2021
- 稿件说明：
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李通, 王逸斌, 赵宁. 舰船纵摇突变对舰面流场的影响[J]. 空气动力学学报, 2021, 39(3): 80−89.

LI Tong, WANG Yibin, ZHAO Ning. Influence of sudden change in pitching motion on ship flow field[J]. 2021, 39(3): 80-89.
李通, 王逸斌, 赵宁. 舰船纵摇突变对舰面流场的影响[J]. 空气动力学学报, 2021, 39(3): 80−89. DOI： 10.7638/kqdlxxb-2019.0136

LI Tong, WANG Yibin, ZHAO Ning. Influence of sudden change in pitching motion on ship flow field[J]. 2021, 39(3): 80-89. DOI： 10.7638/kqdlxxb-2019.0136.

摘要

舰船在海上航行时会受到海浪的影响而产生横摇、纵摇等不同方向上的运动，同时海浪的随机性也会造成舰船摇摆参数发生变化，扰乱舰面流场，增加舰载直升机在甲板上方作业的危险性。为了保障舰载直升机在舰船上的起降和其他甲板作业的安全性，现基于两栖攻击舰的简化模型，通过计算流体力学方法，在纵摇状态下对舰面流场进行数值模拟，将不规则的纵摇运动简化为具有周期性的简谐运动，采用动网格方法来实现舰船的摇摆。首先定性分析了甲板上方涡结构的发展以及舰船纵摇周期和振幅的突变对流场结构带来的影响，其次通过垂向速度的变化对动态舰面流场做了进一步的定量分析。结果表明：当舰船突然开始纵摇或纵摇周期减半后，上层建筑和舰尾附近的位置要滞后于舰首一段时间才能建立起周期性流动，同时纵摇的加速导致了流场的恶化。当纵摇振幅减半后，相当于舰船的“静息期”，流场变化平缓，垂向速度变化范围明显减小，有利于舰载直升机的降落。对于不同的纵摇状态，甲板上方各观测点垂向速度的波动都随高度的降低而增强，特别是舰首靠近甲板区域的波动最强。舰载机飞行员在进行甲板作业时应针对纵摇突变带来的影响，及时采取相应措施以保障作业安全。

Abstract

Moving on the sea

the ship can be heavily affected by sea waves

which results in rolling

pitching and other different motions. Meanwhile

the randomness of sea waves can also cause the change of ship's motion parameters

such as the period and amplitude of pitching or rolling

which can disturb the ship flow field and increase the risk of the ship-borne helicopter's operation above the flight deck. In order to ensure the safety of the take-off/landing and other operations on the deck for ship-borne helicopters

the flow field over the flight deck of a simplified amphibious assault ship in the pitching motion was numerically simulated using computational fluid dynamics method. The irregular pitching motion was simplified as a periodic harmonic motion

and the dynamic mesh method was employed to simulate ship's rolling motion. The development of vortex structures over the deck and the influence of the change of the pitching period and amplitude on the ship airwake were analyzed qualitatively first. Then the dynamic ship airwake was further analyzed quantitatively by the change of vertical velocity. When the ship suddenly begins to pitch or its pitching period is halved

the establishment of the periodic flow field near the superstructure and stern will lag behind that near the bow. At the same time

the acceleration of pitching angular velocity leads to the deterioration of the flow field. When the pitching amplitude is halved

the ship is in the "rest period". The flow field changes gently and the variation of vertical velocity is significantly reduced at this state

which is conducive to the landing of the ship-borne helicopter. For different pitching states

the standard deviations of vertical velocity at the observation points have an increasing trend as the height decreases. It is worth noting that the fluctuation of vertical velocity at the bow near the deck is the strongest. The pilots of ship-borne helicopters should pay attention to the influence of the sudden change of pitching motion

and take corresponding measures to ensure the safety of deck operation.

关键词

Keywords

references

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