The Algorithm and Computer Code for Predicting Detonation Wave Parameters of Aluminized Explosives

Sang Dam Quang; Dr. Toan Nguyen Trung; Dr. Huu Hoang Trung

doi:10.14429/dsj.72.17418

Sang Dam Quang Le Quy Don Technical University, Hanoi City https://orcid.org/0000-0003-3657-6688
Dr. Toan Nguyen Trung Le Quy Don Technical University, Hanoi City, Vietnam https://orcid.org/0000-0002-4753-9869
Dr. Huu Hoang Trung Le Quy Don Technical University, Hanoi City, Vietnam https://orcid.org/0000-0002-7032-775X

DOI: https://doi.org/10.14429/dsj.72.17418

Keywords: Aluminized explosives, Computer code, Detonation wave, Pressure, VOD

Abstract

In this work, the algorithm and computer code, named DETO, used to calculate the detonation wave parameters (i.e., the velocity of detonation and the detonation pressure) of aluminized explosives, based on the chemical equilibrium theory of detonation products, the hydrodynamic theory of detonation process, and the Becker - Kistiakowsky - Wilson (BKW) equation of state. The aluminum (Al) content reacting with detonation products on the detonation wavefront can be changed according to the user's assumptions. Compared to experimental data for several aluminized explosive types, the results calculated by DETO have the same, even higher accuracy than those calculated by other computer codes previously published. Specifically, the mean absolute deviation from experimental data is about 2% for the velocity of detonation (VOD) and about 8% for the pressure on the detonation wavefront. In addition, the study also confirmed that about 50% of Al powders participate in the reaction on the detonation wavefront.