TITLE

More on D(k) for PBX-9502

AUTHOR(S)
Partom, Yehuda
PUB. DATE
April 2004
SOURCE
AIP Conference Proceedings;2004, Vol. 706 Issue 1, p879
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Detonation wave propagation can be efficiently calculated using the Detonation Shock Dynamics (DSD) model. The main part of DSD is the detonation velocity versus front curvature relation D(k). D(k) is usually determined from breakout front shapes z(r) obtained from rate stick tests, as reported by Hill et al for PBX-9502 sticks of three diameters: 10, 18 and 50 mm. It has been shown before that D(k) can be predicted from a reactive flow model . As DSD is a quasi-steady-state model, it seems plausible that D(k) for DSD can be predicted from quasi-steady-state reactive flow calculations. In what follows we check the validity of such a prediction. We predict D(k) for PBX-9502 from our reactive flow model, use it to determine rate stick front shapes, and compare the results with data. We find that the validity of predicting D(k) from steady state reactive flow equations remains in doubt. © 2004 American Institute of Physics
ACCESSION #
14019966

 

Related Articles

  • Relation between the critical detonation diameter of explosive charges with characteristics of their shock-wave sensitivity. Kobylkin, I. F. // Combustion, Explosion, & Shock Waves;May2009, Vol. 45 Issue 3, p326 

    Correlation dependences between the critical diameter of high explosive (HE) charges and characteristics of their shock-wave sensitivity are theoretically justified. Relations for the critical radius of curvature of the detonation-wave front and for the critical detonation diameter are derived...

  • Coarse Explosive Particles of PBX as a Dominant Factor of Detonation Instability. Plaksin, I.; Campos, J.; Direito, J.; Mendes, R.; Simões, P.; Portugal, A.; Ribeiro, J.; Góis, J. // AIP Conference Proceedings;2004, Vol. 706 Issue 1, p887 

    In this paper we have studied the phenomenon of local instabilities of DW in PBX compositions 82%HMX/18%GAP that are distinguished by the HMX grains sizes. A multi-channel high-resolution optical method based on application of 64-optical fiber strips has been applied for the 3D-registration of...

  • Nonclassical steady-state detonation regimes in pressed TNETB. Kolesnikov, S.; Utkin, A. // Combustion, Explosion, & Shock Waves;Nov2007, Vol. 43 Issue 6, p710 

    The reaction zones and the dependence of the velocity of steady-state detonation waves on the initial density of pressed TNETB are studied using a VISAR interferometer. It is shown that, in the range of initial densities of TNETB 1.56–1.77 g/cm3, the propagation of a steady-state...

  • Physical model of low-velocity detonation in plasticized HMX. Grebenkin, K. F.; Taranik, M. V.; Tsarenkova, S. K.; Shnitko, A. S. // Combustion, Explosion, & Shock Waves;Jan2008, Vol. 44 Issue 1, p92 

    A physical model of low-velocity detonation in plasticized HMX is considered. In this model, a low-velocity detonation wave is a combination of a weak leading shock wave and a subsequent compression wave. This combination is formed by the simultaneous effects of energy release and spreading of...

  • 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...

  • Proton Radiography Experiments on Shocked High Explosive Products. Ferm, Eric N.; Dennison, Steve; Lopez, Robert; Prestridge, Kathy; Quintana, John P.; Espinoza, Camilo; Hogan, Gary; King, Nick; Lopez, Julian D.; Merrill, Frank; Morley, Kevin; Morris, Christopher L.; Pazuchanics, Peter; Saunders, Andy; Baker, Stuart A.; Liljestrand, Rodger; Thompson, Richard T. // AIP Conference Proceedings;2004, Vol. 706 Issue 1, p839 

    We studied the propagation of detonation waves and reflections of normal incident detonation waves in explosive products using the 800 MeV proton radiography facility at LANSCE. Using this system, we obtain seven to twenty-one radiographic images of each experiment. We have examined the...

  • Critical Shock Energy and Shock and Detonation Parameters of an Explosive. Yadav, H. S.; Asthana, S. N.; Rao, A. Subhananda // Defence Science Journal;2009, Vol. 59 Issue 4, p436 

    The present study deals with the connection between critical shock energy and detonation properties of an explosive. A relation for critical shock energy has been derived in terms of detonation velocity, width of reaction zone, initial density of the explosive, specific heat ratio of detonation...

  • Shock-to-detonation transition: A model problem. Bdzil, J. B.; Kapila, A. K. // Physics of Fluids A;Feb92, Vol. 4 Issue 2, p409 

    The process by which a trigger ignited shockless weak detonation is transformed into a classical Zeldovich–von Neumann–Doering (ZND) detonation as the trigger wave decelerates is considered in detail. This occurs as the trigger speed passes through the Chapman–Jouguet...

  • Computational study of detonation wave propagation in narrow channels. Chinnayya, Ashwin; Hadjadj, Abdellah; Ngomo, Davy // Physics of Fluids;Mar2013, Vol. 25 Issue 3, p036101 

    A numerical study of the propagation of regular detonation waves is conducted in the context of narrow channels undergoing strong wall confinement. To deal with shock waves, chemical reactions, heat and viscous stresses, a high-order Navier-Stokes solver based on Weighted Essentially...

Share

Read the Article

Courtesy of

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

Try another library?
Sign out of this library

Other Topics