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气射流协助圆盘头部航行体入水空泡特性实验研究

甄梓坤 邹志辉 蒋运华

甄梓坤, 邹志辉, 蒋运华. 气射流协助圆盘头部航行体入水空泡特性实验研究[J]. 水下无人系统学报, 2024, 32(3): 489-495 doi: 10.11993/j.issn.2096-3920.2024-0041
引用本文: 甄梓坤, 邹志辉, 蒋运华. 气射流协助圆盘头部航行体入水空泡特性实验研究[J]. 水下无人系统学报, 2024, 32(3): 489-495 doi: 10.11993/j.issn.2096-3920.2024-0041
ZHEN Zikun, ZOU Zhihui, JIANG Yunhua. Experimental Investigation on Cavity Characteristics during Water Entry of Disc-Headed Vehicle Assisted by Gas Jet Flow[J]. Journal of Unmanned Undersea Systems, 2024, 32(3): 489-495. doi: 10.11993/j.issn.2096-3920.2024-0041
Citation: ZHEN Zikun, ZOU Zhihui, JIANG Yunhua. Experimental Investigation on Cavity Characteristics during Water Entry of Disc-Headed Vehicle Assisted by Gas Jet Flow[J]. Journal of Unmanned Undersea Systems, 2024, 32(3): 489-495. doi: 10.11993/j.issn.2096-3920.2024-0041

气射流协助圆盘头部航行体入水空泡特性实验研究

doi: 10.11993/j.issn.2096-3920.2024-0041
基金项目: 国家自然基金项目资助(52371344); 广东省自然基金面上项目资助(2024A1515012274, 2021A 1515011917).
详细信息
    通讯作者:

    蒋运华(1984-), 男, 博士, 副教授, 主要研究方向为跨介质航行多相流与测控.

  • 中图分类号: TJ630; U637

Experimental Investigation on Cavity Characteristics during Water Entry of Disc-Headed Vehicle Assisted by Gas Jet Flow

  • 摘要: 针对跨介质航行体快速稳定穿越自由液面的需求, 以及目前跨介质过程中存在过大冲击载荷对结构和仪器的破坏、空泡溃灭与复杂非定常多相流动下的弹道失稳等问题,探索采用在航行体头部提供向前射流协助其快速稳定穿越自由液面, 射流穿透并改变自由液面的流场结构, 以达到降低过大载荷的目的。为研究气射流协助圆盘头部航行体入水空泡多相流动特性, 开展了向前喷气协助圆盘头部航行体入水实验。分析了入水过程中所形成的空泡形态, 以及气射流冲击液面过程中开口空泡的形成及演化过程, 探讨了不同通气口径和通气量对空泡直径、射流长度等的影响。实验结果表明: 开口空泡形成过程包括液面凹陷、液面振荡、形成流动和空泡形成4个阶段, 开口空泡直径和深度随通气口径增大而减小, 随通气量增大而增大。

     

  • 图  1  实验系统示意图

    Figure  1.  Diagram of experimental setup

    图  2  航行体运动不同阶段示意图

    Figure  2.  Different stages of vehicle movement

    图  3  空泡流动形态分类示意图

    Figure  3.  Flow pattern of the cavity classification

    图  4  空泡形态分类(开口空泡直径与通气系数对应关系)

    Figure  4.  Cavity pattern classification(The corresponding relationship between cavity diameter and ventilation coefficient)

    图  5  向前喷气协助圆盘航行体垂直入水过程空泡形成及演化过程

    Figure  5.  The formation and evolution process of cavity during the forward jet assisted the disc vehicle vertical water-entry process

    图  6  小通气系数下带气射流圆盘航行体冲击液面过程

    Figure  6.  The impact process of gas jet disc vehicle on water surface under small ventilation coefficient

    图  7  空泡直径随时间的变化及其对应的空泡状态

    Figure  7.  The variation of the cavity diameter with time and its corresponding cavity state

    图  8  射流长度随时间的变化

    Figure  8.  The variation of jet length with time

    图  9  空泡直径和射流长度随时间的变化(Dn=4 mm)

    Figure  9.  The variation of cavity diameter and jet length with time(Dn=4 mm)

    图  10  空泡直径和射流长度随时间的变化(Dn=5 mm)

    Figure  10.  The variation of cavity diameter and jet length with time(Dn=5 mm)

    图  11  不同通气口径下开口空泡直径和深度随通气系数的变化

    Figure  11.  The variation of the diameter and depth of the cavity with the ventilation coefficient under different ventilation nozzle diameters

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    Yang Mao, Wang Hanrui, Zou Zhihui, et al. Experimental investigation on ventilated cavity flow characteristics of the vehicle water exit[J]. Journal of Ordnance Equipment Engineering, 2022, 43(12): 29-33, 144. doi: 10.11809/bqzbgcxb2022.12.005
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出版历程
  • 收稿日期:  2024-03-04
  • 修回日期:  2024-04-08
  • 录用日期:  2024-04-09
  • 网络出版日期:  2024-05-29

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