A numerical study on the thermal initiation of a confined explosive in 2-D geometry

Date

2011-02-15

Author

Aydemir, Erdogan
Ulaş, Abdullah

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

166
views

0
downloads

Insensitive munitions design against thermal stimuli like slow or fast cook-off has become a significant requirement for today's munitions. In order to achieve insensitive munitions characteristics, the response of the energetic material needs to be predicted against heating stimuli. In this study, a 2D numerical code was developed to simulate the slow and fast cook-off heating conditions of confined munitions and to obtain the response of the energetic materials. Computations were performed in order to predict the transient temperature distribution, the ignition time, and the location of ignition in the munitions. These predictions enable the designers to have an idea of when and at which location the energetic material ignites under certain adverse surrounding conditions. In the paper, the development of the code is explained and the numerical results are compared with available experimental and numerical data in the literature. Additionally, a parametric study was performed showing the effect of dimensional scaling of munitions and the heating rate on the ignition characteristics.

Subject Keywords

Environmental Engineering, Waste Management and Disposal, Pollution, Health, Toxicology and Mutagenesis, Environmental Chemistry

URI

https://hdl.handle.net/11511/35976

Journal

JOURNAL OF HAZARDOUS MATERIALS

DOI

https://doi.org/10.1016/j.jhazmat.2010.11.015

Collections

Department of Mechanical Engineering, Article

Suggestions

OpenMETU
Core

Numerical prediction of steady-state detonation properties of condensed-phase explosives Cengiz, F.; Ulaş, Abdullah (Elsevier BV, 2009-12-30) Within the scope of this study, a computer code named BARUT-X has been developed to calculate the detonation properties of C-H-N-O based condensed-phase explosives using the Chapman-Jouguet (C-J) theory. Determination of the detonation properties is performed in chemical equilibrium and steady-state conditions. Unlike other codes in the literature which use steepest descent optimization method, BARUT-X uses a nonlinear optimization code based on Generalized Reduced Gradient algorithm to compute the equilibr...
An ab initio study on ethylenedinitramine and its monovalent ions Türker, Burhan Lemi (Elsevier BV, 2005-02-14) An explosive material, ethylenedinitramine (EDNA), its mono and di aci forms, as well as its monovalent cation and anion forms have been considered for 6-31G (UHF) type ab initio quantum chemical treatment in order to investigate the stability of EDNA in the neutral form and when charges develop on it exposed to electrical fields during the storage, handling or explosion process. The calculations indicate stable species. The aci forms are less stable than EDNA itself and the anion form is more stable than t...
A theoretical study on vomitoxin and its tautomers Türker, Burhan Lemi; Guemues, Selcuk (Elsevier BV, 2009-04-15) In the present work, the structural and electronic properties of vomitoxin (deoxynivalenol, a mycotoxin) and all of its possible tautomers have been investigated by the application of B3LYP/6-31 G(d,p) type quantum chemical calculations. According to the results of the calculations, tautomer V-4 has been found to be the most stable one among all the structures both in the gas and aqueous phases. The calculations also indicated that, vomitoxin and V-2 possess the deepest and the highest lying HOMO levels, re...
Effect of acclimatization of microorganisms to heavy metals on the performance of activated sludge process Ozbelge, Tulay A.; Özbelge, Hilmi Önder; Altinten, Pinar (Elsevier BV, 2007-04-02) Although selected heavy metals (HMs) stimulate biological reactions at low concentrations, all HMs are toxic to microorganisms (MOs) at moderate concentrations and can cause inhibitory effects on the biological processes. Therefore, MOs must be acclimated to HMs or other toxic substances present in wastewaters (WWs) before they are used in an activated sludge process (ASP). In this study, combined effect of Cu2+ and Zn2+ ions in a synthetic WW on the efficiency of a laboratory- scale ASP without recycle was...
Catalytic combustion of ethyl acetate GÜRMEN ÖZÇELİK, TUĞBA; Atalay, Sueheyda; Alpay, Erden (Elsevier BV, 2007-01-01) The catalytic combustion of ethyl acetate over prepared metal oxide catalysts was investigated. CeO, Co2O3, Mn2O3, Cr2O3, and CeO-Co2O3 catalysts were prepared on monolith supports and they were tested. Before conducting the catalyst experiments, we searched for the homogeneous gas phase combustion reaction of ethylacetate. According to the homogeneous phase experimental results, 45% of ethylacetate was converted at the maximum reactor temperature tested (350 degrees C). All the prepared catalysts were test...

Citation Formats

E. Aydemir and A. Ulaş, “A numerical study on the thermal initiation of a confined explosive in 2-D geometry,” JOURNAL OF HAZARDOUS MATERIALS, pp. 396–400, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35976.