Accession Number : ADA268580


Title :   Airblast Calculations for an Underground Explosion


Descriptive Note : Final rept.,


Corporate Author : MISSISSIPPI STATE UNIV MISSISSIPPI STATE DEPT OF MATHEMATICS


Personal Author(s) : Mastin, C W


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a268580.pdf


Report Date : Jul 1993


Pagination or Media Count : 25


Abstract : The HULL hydrodynamics code is used to simulate an underground explosion and to calculate airblast measurements at various locations on the surface. The computations are modeled after the Midnight Hour II event. The computed pressure values are in good agreement with the experimental values, although the HULL code does not model the precursed wave forms found in the experimental data. The computations in this report demonstrate the capability of simulating a blast front which travels through a region composed of multiple materials with differing wave speeds. In order to conserve computer time, the HULL 'firein' option was used which allows the continuation of an existing solution on a new grid. Three different grids were used to simulate the Midnight Hour II event from initial explosion up to a time of 70 msec.... Airblast, Hydrocode, Grid, Underground explosion


Descriptors :   *UNDERGROUND EXPLOSIONS , *BLAST , VELOCITY , MEASUREMENT , EXPERIMENTAL DATA , COMPUTATIONS , REGIONS , SURFACES , VALUE , HYDRODYNAMICS , AGREEMENTS , PRESSURE , TIME , MODELS , COMPUTERS , MATERIALS , GRIDS


Subject Categories : Explosions


Distribution Statement : APPROVED FOR PUBLIC RELEASE