The role of distention in reacting porous solids

Drumheller, D. S.
April 2000
AIP Conference Proceedings;2000, Vol. 505 Issue 1, p133
Academic Journal
Mixture theories are used to model reacting porous solids such as granular explosives. Volume fraction variables are incorporated into these theories because the solid and gaseous reaction products occupy physically distinct volumes within the mixture. Volume fraction is often treated as a kinetic state variable. However, a simple decomposition of the motion demonstrates that it is not a kinematical variable. Indeed, this decomposition yields another variable, the distention, which is kinematical. By using distention as a state variable we suggest a fundamental and important alteration of the constitutive description of reacting porous solids.


Related Articles

  • Instability of superposed streaming fluids through a porous medium. KHAN, Aiyub; TAK, Shyam Sunder; PATNI, Priyadarshi // Turkish Journal of Engineering & Environmental Sciences;2011, Vol. 35 Issue 1, p59 

    This paper treats the Kelvin-Helmholtz instability arising at the interface separating 2 superposed, viscous, electrically conducting fluids through a porous medium in the presence of a uniform 2D horizontal magnetic field. The stability motion was also assumed to be uniform, 2D, and horizontal....

  • Boundary Domain Integral Method for Double Diffusive Natural Convection in Porous Media Saturated with Compressible Fluid. Kramer, J.; Jecl, R.; Sˇkerget, L. // AIP Conference Proceedings;9/15/2008, Vol. 1048 Issue 1, p332 

    In the present work, a Boundary Domain Integral Method, which has been already established for the solution of viscous incompressible fluid flow through porous media, is extended to capture compressible fluid flow in porous media. The presented numerical scheme was used for solving the problem...

  • Effect of interfacial slip on the kinematic and dynamic parameters of elastic waves in a fluid-saturated porous medium. Markov, M. G. // Acoustical Physics;Mar2007, Vol. 53 Issue 2, p213 

    The method proposed by Bedford, Costley, and Stern (in 1984) is used to derive the expressions for the drag and virtual mass coefficients involved in the equations of the acoustics of fluid-saturated porous media taking into account the interfacial slip. Special consideration is given to the...

  • Wave propagation in unsaturated porous media. Steeb, Holger; Kurzeja, Patrick; Schmalholz, Stefan // Acta Mechanica;Aug2014, Vol. 225 Issue 8, p2435 

    We present a simple macroscopical three-phase model describing wave propagation in partially saturated porous media. The model consists of a continuous non-wetting phase and a continuous wetting phase and is an extension of classical biphasic (Biot-type) models. The framework is based on...

  • Analysis of the Thermal Explosion in Systems Porous Reagent–Active Gas–Solid Product. Shkadinskii, K. G.; Ozerkovskaya, N. I.; Kostin, S. V. // Combustion, Explosion, & Shock Waves;May/Jun2004, Vol. 40 Issue 3, p285 

    The specific features of dynamics of the thermal explosion in systems porous reagent- active gas-solid product under conditions where the heat-transfer and mass-transfer regions are separated from the ambient medium are considered. In addition to the competition of heat release and heat removal,...

  • Acceleration capability of explosive mixtures with a process additive. Voskoboinikov, I. // Combustion, Explosion, & Shock Waves;May2010, Vol. 46 Issue 3, p360 

    The acceleration capability of HMX charges with a process additive is examined. The decrease in the acceleration capacity is largely determined by the charge porosity; for a fixed volume content of the pore-filling additive, the acceleration capability decreases in the series from polyethylene...

  • Effect of aluminum silicate wool on the flame speed and explosion overpressure in a pipeline. Yan, X.; Yu, J. // Combustion, Explosion, & Shock Waves;Mar2013, Vol. 49 Issue 2, p153 

    Problems of decreasing the flame speed resulting from pre-mixed gas explosions and attenuating explosion overpressures are discussed. A cylindrical test pipeline with an 89×4.5 mm cross section is used to study flame propagation characteristics of an acetylene-air mixture both in the empty...

  • Measuring the brightness temperature of a detonation front in a porous explosive. Tarasov, M. D.; Karpenko, I. I.; Sudovtsov, V. A.; Tolshmyakov, A. I. // Combustion, Explosion, & Shock Waves;Jul2007, Vol. 43 Issue 4, p465 

    The detonation temperature of pressed PETN grains with a relative volumetric concentration of air pores of 0.0047–0.147 was measured using an optical fiber pyrometer at wavelengths of 678 and 487 nm. The nonequilibrium nature of the radiation of the detonation front was shown to be due to...

  • Chemistry: Bangs in the dark.  // Nature;2/12/2009, Vol. 457 Issue 7231, p767 

    The article discusses the porous metal-organic framework (MOF) developed by Jing Li and colleagues at Rutgers University in New Jersey. Topics include the identification of certain explosives by their luminosity and what happens when the MOF pores fill up with 2,4-dinitrotoulene, which is a...


Read the Article


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

Try another library?
Sign out of this library

Other Topics