Accession Number:

ADA595495

Title:

A Computational Investigation of Various Water-Induced Explosion Mitigation Mechanisms

Descriptive Note:

Journal article

Corporate Author:

CLEMSON UNIV SC DEPT OF MECHANICAL ENGINEERING

Report Date:

2007-01-01

Pagination or Media Count:

31.0

Abstract:

Interactions of the detonation-product gas, shell-casing fragments, soil ejecta and various other debris with bulk water barriers surrounding the explosive have been demonstrated to have a potentially major beneficial effect in mitigation of the effects of an explosion. In the present work various computational methods ranging from those based on thermo-chemistry of the detonationcombustion chemical reactions to those involving transient, nonlinear-dynamics based mechanical interactions between detonation products, air and water are used to better understand and quantify the beneficial effects of various potential explosion-mitigation mechanisms. In particular, the absorption of the detonation energy by water, water-aerosolization induced reduction in the shock speed, transfer of momentum from the explosion products to water and decelerationsuppression of the combustion reactions are examined computationally. The results obtained show that water evaporation which consumes a substantial portion of the detonation energy plays a dominant role in the overall water-induced explosion-mitigation process. The detonation-product-to-water momentum transfer which causes water aerosolization, on the other hand, is found to be a key prerequisite for efficient explosion mitigation.

Subject Categories:

  • Numerical Mathematics
  • Explosions

Distribution Statement:

APPROVED FOR PUBLIC RELEASE