Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Numerical Analysis on Characteristics of Blast Wave in Open Space and Structure

개활지 및 구조물 내에서의 폭풍파 특성에 대한 수치 분석

  • Roh, Taejun (Department of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Lee, Younghun (Department of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Ji, Juntae (Department of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Lee, Woonghyun (R&D Center, NEXTfoam Co., LTD.) ;
  • Yoh, Jai-ick (Department of Mechanical and Aerospace Engineering, Seoul National University)
  • 노태준 (서울대학교 기계항공공학부) ;
  • 이영헌 (서울대학교 기계항공공학부) ;
  • 지준태 (서울대학교 기계항공공학부) ;
  • 이웅현 (넥스트폼 기술연구소) ;
  • 여재익 (서울대학교 기계항공공학부)
  • Received : 2019.12.21
  • Accepted : 2020.01.29
  • Published : 2020.02.05
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Abstract

In this study, numerical analysis was carried out on a complex pressure field of blast waves caused by the detonation of high explosives in various environments. The generated blast waves propagated in the air, upon the sudden release of high energy induced by the explosion. Reflected waves were created when the pressure waves encountered certain obstacles such as the ground or the walls of structures. The propagation of the blast waves and its interaction with the reflected waves were simulated. An adaptive mesh refinement was applied to improve the efficiency of distribution of computer resource, for the computational calculation of the blast wave propagation in a wide open space. In addition, the integration of the calculation domains for the explosive and air were considered when the maximum density of the explosive region was below critical value. The results were verified by comparison with the pressure time history from blast wave experiments performed under two topographical conditions.

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References

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