Journal of Mechanical Science and Technology

, Volume 30, Issue 9, pp 3907–3915 | Cite as

Effect of surface conditions on blast wave propagation

  • Seungho Song
  • Yibao Li
  • Changhoon Lee
  • Jung-Il Choi
Article

Abstract

We performed numerical simulations of blast wave propagations on surfaces by solving axisymmetric two-dimensional Euler equations. Assuming the initial stage of fireball at the breakaway point after an explosion, we investigated the effect of surface conditions considering surface convex or concave elements and thermal conditions on blast wave propagations near the ground surface. Parametric studies were performed by varying the geometrical factors of the surface element as well as thermal layer characteristics. We found that the peak overpressure near the ground zero was increased due to the surface elements, while modulations of the blast wave propagations were limited within a region for the surface elements. Because of the thermal layer, the precursor was formed in the propagations, which led to the attenuation of the peak overpressure on the ground surface.

Keywords

Blast wave propagation Explosion Peak overpressure Obstacles Thermal layer 

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Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Seungho Song
    • 1
  • Yibao Li
    • 1
  • Changhoon Lee
    • 1
    • 2
  • Jung-Il Choi
    • 1
  1. 1.Department of Computational Science and EngineeringYonsei UniversitySeoulKorea
  2. 2.Department of Mechanical EngineeringYonsei UniversitySeoulKorea

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