A Model for Critical Behaviour in a Liquid Explosive Experiencing Dual Ambient Temperatures- Part 2. Temperature Trajectories and Times to Explosion

摘要

1. The dimensionless heat balance equation for a charge of liquid explosive subjected to two ambient temperatures, previously examined analytically [1], has been integrated numerically under two sets of parametric conditions, one marginally supercritical and the other marginally subcritical. Such integration yields temperature-time trajectories. The corresponding equation for the single-ambient-temperature case has been treated similarly. 2. The critical condition with dual ambient temperatures, previously derived analytically, was confirmed numerically to within 1%. 3. Times to explosion of the single- and dual-ambient-temperature charges of DINA under marginally supercritical conditions have been shown to differ by about half an order of magnitude. 4. The temperature trajectories for the simpler (single ambient temperature) case were compared with experimental trajectories reported by other workers for a charge of DINA under the same conditions that were incorporated into the computer simulations. Agreement was close to being exact.