瞬时爆轰TNT装药爆炸计算方法

Calculations for blast wave of sphericalTNT charge with shock fitting technique

对高精度TNT装药爆炸进行了理论计算,在使用二阶显式差分格式的基础上,详细地描述了使用样条函数进行激波装配、波形处理的全过程。

Calculations have been made for the blast wave of spherical TNT charge with the hydrodynamic equations on Lagrangean mass coordinates in this paper. The shock fitting technique and the artificial viscosity technique are combined. The main shock wave is calculated with the shock fitting technique, while the contact discontinuity and next shock waves are calculated with the artificial viscosity technique. The numerical calculation is carried out by the transformed hydrodynamic equations on the shock moving coordinates and without the use of mergence of calculation net. The calculation results are good. The dimensionless hydrodynamic equations on Lagrangian coordinates are presented.