Computational Studies for 1/57-Scale Large Blast Simulator (LBS) configurations with the BLAST2D Code
Abstract
One of the continuing research efforts of the Blast Dynamics Branch at the U.S. Army Ballistic Research Laboratory (BRL) is to simulate the flow that results from nuclear explosions and to test the nuclear survivability of military equipment. When atmospheric nuclear blast tests were banned, chemical explosive tests were designed and conducted to simulate the blast and thermal pulses produced by real nuclear explosions. These full-scale tests provided data for analysis of nuclear survivability to tactical Army equipment. However, the logistics and expense of full-scale chemical explosive tests meant that an average of only one test could be conducted every two years. A series of computational simulations are performed for comparison to experimental data from a 1/57 -scale Large Blast Simulator (LBS) experimental shock tube. The computations simulate experiments with various high pressure and temperature initial driver gas conditions. In addition to temperature and pressure variations, geometry and numerical accuracy variation are performed and studied. The computations were performed using an axisymmetric, inviscid, time-accurate, finite-volume numerical technique which employs upwind flux differencing with total variation diminishing techniques. Computational results are presented in the form of static and stagnation pressure versus time histories and contour plots. Keywords: Supercomputer simulations, Euler equations, Upwind.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1990
- Accession Number
- ADA227514
Entities
People
- Dixie M. Hisley
Organizations
- Ballistic Research Laboratory