Explosive Products EOS: Adjustment for detonation speed and energy release

Menikoff, Ralph¹ 

[1] Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

关键词: EQUATION OF STATE;    DETONATION WAVE;   

DOI  :  10.2172/1154960
RP-ID  :  LA-UR-14-26963
PID  :  OSTI ID: 1154960

学科分类：数学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

Propagating detonation waves exhibit a curvature effect in which the detonation speed decreases with increasing front curvature. The curvature effect is due to the width of the wave profile. Numerically, the wave profile depends on resolution. With coarse resolution, the wave width is too large and results in a curvature effect that is too large. Consequently, the detonation speed decreases as the cell size is increased. We propose a modification to the products equation of state (EOS) to compensate for the effect of numerical resolution; i.e., to increase the CJ pressure in order that a simulation propagates a detonation wave with a speed that is on average correct. The EOS modification also adjusts the release isentrope to correct the energy release.