FAB Code Computations of a 1-KT Nuclear Free-Air Blast Wave to Low Shock Overpressures

摘要

The FAB hydrodynamic computer code was developed for computing the blast flow characteristics of a nuclear free-air blast wave. The flow field is represented by a multi-cell moving grid with fluid properties calculated by Godunov's method. The shock wave at the blast front is represented by the Hugoniot relation. Real air properties may be represented by either Brode (1965) or Doan-Nickel equations of state. Thermal radiation is taken into account. Calculation results are presented and compared with nuclear test data summaries and with other predictions. Predicted FAB shock front overpressures below 10 psi are generally near to or between the extremes of the nuclear test data summaries in DASA 1200 as obtained from ground-based and airborne measurements. (Author)