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开放空腔壳体入水流场结构及流体动力特征研究

路中磊 魏英杰 王聪 孙铁志

路中磊, 魏英杰, 王聪, 等 . 开放空腔壳体入水流场结构及流体动力特征研究[J]. 北京航空航天大学学报, 2016, 42(11): 2403-2412. doi: 10.13700/j.bh.1001-5965.2015.0711
引用本文: 路中磊, 魏英杰, 王聪, 等 . 开放空腔壳体入水流场结构及流体动力特征研究[J]. 北京航空航天大学学报, 2016, 42(11): 2403-2412. doi: 10.13700/j.bh.1001-5965.2015.0711
LU Zhonglei, WEI Yingjie, WANG Cong, et al. Flow field structure and fluid dynamic characteristics of semi-closed cylinder water-entry[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(11): 2403-2412. doi: 10.13700/j.bh.1001-5965.2015.0711(in Chinese)
Citation: LU Zhonglei, WEI Yingjie, WANG Cong, et al. Flow field structure and fluid dynamic characteristics of semi-closed cylinder water-entry[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(11): 2403-2412. doi: 10.13700/j.bh.1001-5965.2015.0711(in Chinese)

开放空腔壳体入水流场结构及流体动力特征研究

doi: 10.13700/j.bh.1001-5965.2015.0711
基金项目: 国家自然科学基金(11672094);黑龙江省自然科学基金(A201409);中央高校基本科研业务费专项资金(HIT.NSRIF.201159);哈尔滨市科技创新人才研究专项资金(2013RFLXJ007)
详细信息
    作者简介:

    路中磊,男,博士研究生。主要研究方向:多相流体动力学数值仿真及试验研究。E-mail:lu_zhonglei@163.com;魏英杰,男,博士,教授,博士生导师。主要研究方向:多相流体动力学、空气动力学研究。Tel.:0451-86413510,E-mail:weiyingjie@gmail.com

    通讯作者:

    魏英杰,Tel.:0451-86413510,E-mail:weiyingjie@gmail.com

  • 中图分类号: TB126;V19

Flow field structure and fluid dynamic characteristics of semi-closed cylinder water-entry

  • 摘要: 基于混合介质雷诺平均Navier-Stokes方程,对开放空腔壳体垂直入水运动过程开展了数值研究,得到了压力场、速度场分布,空泡波动、闭合特征,空腔气体涨缩规律,以及流体动力变化规律,并分析了空腔结构在入水运动过程中对流场结构和流体动力的影响。结果表明:液体随气体涨缩同步进出开放端;开放端局部形成波动的压力源和周期性的压力场、速度场分布;入水空泡呈现波动形态,其扩展程度与开放端液体流速相关;空泡内形成气体漩涡,随空腔涨缩往返进出空泡,对空泡闭合具有抑制作用;流体动力呈波动变化规律,频率与气体涨缩频率一致,幅值与气体涨缩程度成正比。开放空腔结构在入水过程中空腔内气体发生涨缩运动,对流场结构和流体动力产生周期性扰动作用,在一定程度上可以减缓冲击、维持空泡及运动的稳定性。

     

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出版历程
  • 收稿日期:  2015-11-02
  • 修回日期:  2015-12-18
  • 刊出日期:  2016-11-20

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