Simulating Afterburn with LLNL Hydrocodes

Daily, L D

Lawrence Livermore National Laboratory

关键词: Lawrence Livermore National Laboratory;    National Security;    37 Inorganic, Organic, Physical And Analytical Chemistry;    42 Engineering;    Kinetic Energy;   

DOI  :  10.2172/15014409
RP-ID  :  UCRL-TR-206313
RP-ID  :  W-7405-ENG-48
RP-ID  :  15014409

美国|英语

来源: UNT Digital Library

【 摘 要 】

Presented here is a working methodology for adapting a Lawrence Livermore National Laboratory (LLNL) developed hydrocode, ALE3D, to simulate weapon damage effects when afterburn is a consideration in the blast propagation. Experiments have shown that afterburn is of great consequence in enclosed environments (i.e. bomb in tunnel scenario, penetrating conventional munition in a bunker, or satchel charge placed in a deep underground facility). This empirical energy deposition methodology simulates the anticipated addition of kinetic energy that has been demonstrated by experiment (Kuhl, et. al. 1998), without explicitly solving the chemistry, or resolving the mesh to capture small-scale vorticity. This effort is intended to complement the existing capability of either coupling ALE3D blast simulations with DYNA3D or performing fully coupled ALE3D simulations to predict building or component failure, for applications in National Security offensive strike planning as well as Homeland Defense infrastructure protection.