叶曦, 初文华, 陈林, 张阿漫. 近自由液面气泡与冲击波的相互作用[J]. 中国舰船研究, 2017, 12(5): 90-96. DOI: 10.3969/j.issn.1673-3185.2017.05.011
引用本文: 叶曦, 初文华, 陈林, 张阿漫. 近自由液面气泡与冲击波的相互作用[J]. 中国舰船研究, 2017, 12(5): 90-96. DOI: 10.3969/j.issn.1673-3185.2017.05.011
YE Xi, CHU Wenhua, CHEN Lin, ZHANG Aman. Interaction between bubble near free surface and shock wave[J]. Chinese Journal of Ship Research, 2017, 12(5): 90-96. DOI: 10.3969/j.issn.1673-3185.2017.05.011
Citation: YE Xi, CHU Wenhua, CHEN Lin, ZHANG Aman. Interaction between bubble near free surface and shock wave[J]. Chinese Journal of Ship Research, 2017, 12(5): 90-96. DOI: 10.3969/j.issn.1673-3185.2017.05.011

近自由液面气泡与冲击波的相互作用

Interaction between bubble near free surface and shock wave

  • 摘要:
      目的  为了研究自由液面、气泡与冲击波三者之间的相互作用,
      方法  基于间断迦辽金法,结合Level Set与Real Ghost Fluid方法,分析复杂流场中冲击波传播特性及气泡运动特性,描述流场内各种波系的生成与发展过程。
      结果  结果表明:在相互作用过程中,流场生成的复杂波系中包含多个稀疏波和冲击波。自由液面减缓了气泡的溃灭速度,而入射冲击波则加快了气泡的溃灭速度,并使自由液面的上拱运动增大。
      结论  所得结果可为水下爆炸对舰船结构的毁伤机理提供参考。

     

    Abstract:
      Objectives  This paper presents research into the interaction between a free surface, shock wave and bubble.
      Methods  Based on the Discontinuous Galerkin method and combined with the Level Set method and Real Ghost Fluid method, the characteristics of shock wave propagation and bubble motion are analyzed, the generation and evolution of waves in fluid fields are described in detail.
      Results  The results show the presence of complex waves in the fluid field after the interaction, including multiple rarefaction waves and shock waves. The collapse speed of the bubble is slowed down with the existence of the free surface, while the shock wave of the incident accelerates the collapse speed of the bubble and increases the up warp motion of the free surface.
      Conclusions  The conclusions drawn from this paper can be used as reference points for further research into the damage mechanisms of ship structures subjected to underwater explosions.

     

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