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Underwater Explosion Experiments using Pentolite  

Choi, Gulgi (한국과학기술원 기계공학과 해양기술연구센터)
Jung, Keunwan (한국항공우주산업(주))
Jung, Son Soo ((주)한화 여수사업장)
Kim, Jong-Chul (국방과학연구소)
Lee, Phill-Seung (한국과학기술원 기계공학과)
Publication Information
Explosives and Blasting / v.35, no.3, 2017 , pp. 21-30 More about this Journal
Abstract
When explosives explode in water, the effect of post-explosion gas after explosion should be considered, unlike explosion in the air. During explosion in water, the propagation velocity of the explosion pressure is faster than when the explosion occurs in the air. The generated gas is diffused and trapped in the form of bubbles by water before the energy is dissipated. At this time, the bubble expands and contracts, creating a shock wave. In order to investigate this series of phenomena, a cylinder type steel water tank capable of observing the interior was fabricated and explosion experiments were conducted. In this study, a small amount of shell-free pentolite was exploded in water. Experiments were performed to observe the behavior of the generated gas bubble as well as to measure the shock wave generated. We designed the experimental method of underwater explosion and examined the results.
Keywords
Underwater explosion; Pentolite; Bubble dynamics;
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