수중 폭발현상에 대한 전산해석 = Numerical modeling of underwater explosion phenomena

다국어 초록 (Multilingual Abstract)

Underwater explosion properties for TNT, an ideal explosive, and DXD-04, a nonideal explosive, were numerically modeled with a one-dimensional Lagrangian hydrodynamic code. The equation of state parameters for detonation products for TNT and DXD-04 were obtained from the BKW code, assuming complete reaction. Burn of TNT was modeled by using the Chapman-Jouguet(CJ) volume burn technique, a programmed-burn technique, assuming instantaneous detonation reaction. Burn of DXD-04 was modeled by using the same technique and by using the reaction rate calibrated from two-dimensional steady-state de-tonation experiments. The calculations for TNT reproduced the experimental peak pressure of the shock wave propagating through water with an error of 3.0% and the experimental oscillation period of the bubble formed of detonation products with af error of 2.3%. For DXD-04, the CJ volume burn technique could not reproduce the experimental observations. When the reaction rate calibrated from two-dimensional steady-state detonation experimental data, the calculated peak pressure was slightly higher by 7.3% than the experimental data, but the calculated shock profile was in good agreement. The bubble period was reproduced with an error of 1.8%. These results demonstrated that underwater explosion properties for an ideal explosive can be predicted by using a programmed burn technique, and that, however, those for a nonideal explosive can be predicted only when a well-calibrated reaction rate is used.

목차 (Table of Contents)

• ABSTRACT
  
• 1. 머리말
  
• 2. 이론적인 고찰
  
• 3. 전산해석 기법
  
• 4. 결과 및 토의
  
• 5. 맺음말
  
• 참고문헌