An equation of state for detonation products incorporating small carbon clusters

Conference · Wed Oct 01 04:00:00 EDT 1997

OSTI ID:537356

Shaw, M S

A theoretical equation of state for detonation products is presented that incorporates the small cluster behavior of the carbon. For small diamond clusters of the size found in recovery experiments, the fraction of carbon atoms on the surface can be as much as 25%. The composition and properties of the clusters are modeled with the dangling bonds capped by various radicals composed of C, H, N, and O from the background molecular fluid mixture. A perturbation theory approach is used for the mixture of molecular fluids that also includes features based on Monte Carlo simulations. For example, the effect of cross potentials on nonideal mixing in a chemical equilibrium simulations, is shown to be well approximated by an entropy shift and ideal mixing. Comparison is made of the EOS with individual species Hugoniot data and with detonation velocity data for a variety of explosives. In addition, recent data for PBX-9501 is utilized which characterizes sound speed, overdriven Hugoniot, adiabatic {gamma}, Grueneisen {gamma}, and a precise thermodynamic CJ state.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 537356
• Report Number(s): LA-UR--97-2939; CONF-970707--5; ON: DE97008317
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
ATOMIC CLUSTERS
CARBON DIOXIDE
CARBON MONOXIDE
CHEMICAL EXPLOSIONS
CHEMICAL EXPLOSIVES
CHEMICAL REACTION YIELD
COMBUSTION PRODUCTS
EQUATIONS OF STATE
NITROGEN
WATER VAPOR