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Volume 33 Issue 6
Nov 2019
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Chinese Journal of High Pressure Physics  > 2019  >  33(6): 065101.
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Citation: TIAN Junhong, SUN Yuanxiang, ZHANG Zhifan. Effect of Al/O Ratio on Underwater Explosion Load and Energy Output Configuration of Aluminized Explosive[J]. Chinese Journal of High Pressure Physics, 2019, 33(6): 065101. doi: 10.11858/gywlxb.20190745
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Effect of Al/O Ratio on Underwater Explosion Load and Energy Output Configuration of Aluminized Explosive

doi: 10.11858/gywlxb.20190745

  • State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

  • Received Date: 25 Mar 2019
  • Rev Recd Date: 19 Apr 2019
    Abstract
  • In order to study the effect of Al/O ratio on underwater explosion load and energy output configuration of aluminized explosives systematically, four kinds of aluminized explosives are taken into account, and their Al/O ratio are 0, 0.16, 0.36 and 0.63, respectively. Coupled Eulerian-Lagrangian method was used to simulate the whole process of underwater explosion of four kinds of aluminized explosives on the basis of verifying the effectiveness of numerical method. The coupling effect between shock wave and bubble was considered in the numerical simulation. The impact effect is explained from three aspects: shock wave, bubble and energy output configuration. Simulation results show that with the increase of Al/O ratio, shock wave attenuation constant, shock wave impulse, bubble period, bubble maximum radius and specific bubble energy of underwater explosion of aluminized explosives all increase. Shock wave peak pressure, energy flow density and specific shock wave energy reach the maximum when Al/O ratio is 0.36. The addition of aluminum improves bubble energy more significantly than shock wave energy.

     

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