Explosive Model Tarantula 4d/JWL++ Calibration of LX-17

Souers, P C ; Vitello, P A

关键词: AIR;    CALIBRATION;    EXPLOSIONS;    EXPLOSIVES;    KINETICS;   

DOI  :  10.2172/945852
RP-ID  :  LLNL-TR-407746
PID  :  OSTI ID: 945852
Others  :  TRN: US200904%%173

学科分类：化学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

Tarantula is an explosive kinetic package intended to do detonation, shock initiation, failure, corner-turning with dead zones, gap tests and air gaps in reactive flow hydrocode models. The first, 2007-2008 version with monotonic Q is here run inside JWL++ with square zoning from 40 to 200 zones/cm on ambient LX-17. The model splits the rate behavior in every zone into sections set by the hydrocode pressure, P + Q. As the pressure rises, we pass through the no-reaction, initiation, ramp-up/failure and detonation sections sequentially. We find that the initiation and pure detonation rate constants are largely insensitive to zoning but that the ramp-up/failure rate constant is extremely sensitive. At no time does the model pass every test, but the pressure-based approach generally works. The best values for the ramp/failure region are listed here in Mb units.