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Volume 38 Issue 1
Feb 2024
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Chinese Journal of High Pressure Physics  > 2024  >  38(1): 015102.
WU Yixuan, SHAO Yan, XIE Yujie, GAO Honglin, ZHANG Zhifan. Load Characteristics of Underwater Explosion Shock Wave near Seabed Charge Projectile[J]. Chinese Journal of High Pressure Physics, 2024, 38(1): 015102. doi: 10.11858/gywlxb.20230744
Citation: WU Yixuan, SHAO Yan, XIE Yujie, GAO Honglin, ZHANG Zhifan. Load Characteristics of Underwater Explosion Shock Wave near Seabed Charge Projectile[J]. Chinese Journal of High Pressure Physics, 2024, 38(1): 015102. doi: 10.11858/gywlxb.20230744
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Load Characteristics of Underwater Explosion Shock Wave near Seabed Charge Projectile

doi: 10.11858/gywlxb.20230744
  • 1.

    National Key Laboratory of Strong Pulse Radiation Environment Simulation and Effects, Northwest Institute of Nuclear Technology, Xi’an 710024, Shaanxi, China

  • 2.

    School of Ship Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China

  • 3.

    College of Marine Engineering, Dalian Maritime University, Dalian 116026, Liaoning, China

  • Received Date: 07 Oct 2023
  • Rev Recd Date: 08 Nov 2023
    • Available Online: 30 Jan 2024
  • Issue Publish Date: 05 Feb 2024
    Abstract
  • The near-seabed explosion shock wave can cause serious damage to such facilities as submarine optical cables and pipelines. The spatiotemporal evolution of the underwater explosion shock wave can be affected by the impedance of different types of substrate. Therefore, it is of great significance to study the near-seabed explosion shock wave load under different substrate conditions. Based on the coupled Eulerian-Lagrangian (CEL) method, a numerical model of near seabed explosion is established to investigate the effect of seabed material on the shock wave load of near seabed explosions. The results show that the seabed material significantly affects the peak pressure of the shock wave within a certain range of measuring point angles of 20°–50°. The reflection effect of the near seabed increases with the increase of the explosion distance ratio within a certain range of measurement point angles of 20°–50°. When the measurement point angle exceeds this range, this phenomenon gradually disappears. The effect regions of these two types of seabed sediment are similar while their reflection coefficients are significantly different. When the seafloor sediment is soft, the reflection coefficient near seafloor ranges from 0.81 to 1.05. However, when the seafloor sediment is hard, the reflection coefficient near seafloor ranges from 0.98 to 1.33. The water depth has little effect on the peak pressure of the shock wave.

     

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