TITLE

Application of detonation shock dynamics to the propagation of a detonation in nitromethane in a packed inert particle bed

AUTHOR(S)
Frost, David L.; Aslam, Tariq; Hill, Larry G.
PUB. DATE
April 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 505 Issue 1, p821
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A multidimensional implementation of DSD, formulated with the level set method, is applied to track the propagation of a detonation wave in a heterogeneous explosive consisting of an array of inert cylindrical obstacles with a liquid explosive in the interstitial space. With the Huygens assumption, the average detonation velocity through the explosive is less than that for the liquid explosive alone, due to the increased path length. When the normal detonation velocity is assumed to depend on front curvature, there is an additional, smaller reduction in the detonation velocity, which depends on the cylinder material. The detonation velocity deficits obtained in the computations are of the same order as those observed experimentally for a heterogeneous explosive consisting of a packed bed of spherical inert beads saturated with sensitized nitromethane. The DSD computations are relevant to the experimental results in the large-bead limit in which the pore dimension is large enough to support the propagation of discrete detonation wavelets in the interstitial liquid between the beads.
ACCESSION #
5985391

 

Related Articles

  • Detonation front in homogeneous and heterogeneous high explosives. Fedorov, A. V.; Zotov, E. V.; Krasovsky, G. B.; Menshikh, A. V.; Yagodin, N. B. // AIP Conference Proceedings;2000, Vol. 505 Issue 1, p801 

    The present report describes the results of experimental researches of detonation wave structure in homogeneous liquid HE: tetranitromethane (TNM), its mixtures with nitromethane and nitrobenzene (TNM/NM, TNM/NB) and plastified compositions based on HMX, RDX, PETN and TNT (heterogeneous HE)....

  • Detonation properties of nitromethane, deuterated nitromethane and bromonitromethane. Sheffield, Stephen A.; Davis, Lloyd L.; Engelke, Ray // AIP Conference Proceedings;2000, Vol. 505 Issue 1, p789 

    Liquid nitromethane (CH[SUB3]NO[SUB2] -- NM) is an important explosive material because of its chemical and physical simplicity. It has proved useful in studies of the chemistry and physics of initiation and detonation. We have experimentally investigated some of the effects on its properties...

  • Detonation properties of bromonitromethane. Davis, Lloyd L.; Sheffield, Stephen A.; Engelke, Ray // AIP Conference Proceedings;2000, Vol. 505 Issue 1, p785 

    Bromonitromethane (CH[SUB2]BrNO[SUB2])(BrNM) is chemically similar to nitromethane (NM), with one hydrogen atom replaced by bromine. It is a liquid explosive with an initial density of 2.009 g/cm[SUP3]. We have shown its sensitivity to shock to be similar to neat NM. Its von Neumann spike...

  • Detonation Propagation in Shock-Compressed Liquid Explosives. Petel, Oren E.; Tanguay, Vincent; Higgins, Andrew J.; Yoshinaka, Akio C.; Fan Zhang // AIP Conference Proceedings;2004, Vol. 706 Issue 1, p883 

    The propagation of detonation in a liquid explosive (nitromethane) that has been precompressed by a shock wave is investigated experimentally. An explosive donor charge is used to transmit a shock wave into a capsule containing a tube of test explosive (sensitized nitromethane) perpendicular to...

  • Reactive Flow in Nitromethane Using a Quasiharmonic Unreacted Equation of State. Mulford, Roberta; Swift, Damian // AIP Conference Proceedings;2004, Vol. 706 Issue 1, p875 

    This work examines the suitability of an Arrhenius reaction rate for describing homogeneous initiation of nitromethane, CH3NO2. We use reactive flow models that include temperature as well as mechanical state to investigate shock initiation in nitromethane. We describe the construction of an...

  • MEASUREMENT OF DETONATION VELOCITY FOR A NONIDEAL HETEROGENEOUS EXPLOSIVE IN AXISYMMETRIC AND TWO-DIMENSIONAL GEOMETRIES. Higgins, Andrew // AIP Conference Proceedings;12/28/2009, Vol. 1195 Issue 1, p193 

    Detonation in a heterogeneous explosive with a relatively sparse concentration of reaction centers (“hot spots”) is investigated experimentally. The explosive system considered is nitromethane gelled with PMMA and with glass microballoons (GMB’s) in suspension. The detonation...

  • SIZE EFFECT AND CYLINDER TEST ON SEVERAL COMMERCIAL EXPLOSIVES. Souers, P. C.; Lauderbach, L.; Moua, K.; Garza, R. // AIP Conference Proceedings;2012, Vol. 1426 Issue 1, p343 

    Some size (diameter) effect and the Cylinder test results for Kinepak (ammonium nitrate/nitromethane), Semtex 1, Semtex H and urea nitrate are presented. Cylinder test data appears normal despite faster sound speeds in the copper wall. Most explosives come to steady state in the Cylinder test as...

  • Double slapper initiation of the PBX. Mendes, R.; Plaksin, I.; Campos, J.; Ribeiro, J. // AIP Conference Proceedings;2000, Vol. 505 Issue 1, p915 

    The interaction of two divergent detonation waves (DW), initiated simultaneously by two flyer plates in a PBX based on a bimodal particle distribution of RDX was studied. The slappers are generated by the interaction, of a single (25 mm in diameter) flyer plate against a twin pierced barrel....

  • Proton Radiography Examination of Unburned Regions in PBX 9502 Corner Turning Experiments. Ferm, Eric N.; Morris, Christopher L.; Quintana, John P.; Pazuchanic, Peter; Stacy, Howard; Zumbro, John D.; Hogan, Gary; King, Nick // AIP Conference Proceedings;2002, Vol. 620 Issue 1, p966 

    PBX 9502 Corner Turning Experiments have been used with various diagnostics techniques to study detonation wave propagation and the boosting of the insensitive explosive. In this work, the uninitiated region of the comer turning experiment is examined using Proton Radiography. Seven transmission...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics