Reparameterization of the Becker-Kistiakowsky-Wilson equation of state for water-gel explosives

Journal Article · Sat Jan 01 04:00:00 EST 1983 · Combust. Flame; (United States)

DOI:https://doi.org/10.1016/0010-2180(83)90062-7· OSTI ID:6967655

Mohan, V K; Hay, J E

This paper describes the results of the reparameterization studies on the Becker-Kistiakowsky-Wilson (BKW) equation of state for water-gel explosives. The original set of BKW parameters (a = 0.5, ..beta.. = 0.1, K = 11.85, and THETA - 400) predicts a higher detonation velocity and detonation pressure and a lower detonation temperature compared with the experimental values for these explosives. Among the several combinations of parameters examined, the following set - ..cap alpha.. = 0.5, ..beta.. =0.1, K = 8.85, and THETA = 1.850 - is found to give realistic values for the various detonation properties. Moreover, the predicted and the experimental detonation velocities are seen to be in fair agreement. A comparison of the computed and the experimental fume characteristics show that (1) inclusion of the wrapper material in the explosive composition increases the concentration of fumes and gives correspondence between the two products such as CO, H/sub 2/, NH/sub 3/, and CH/sub 4/; (2) the measured NO/sub x/ concentration is difficult to get in these computations; and (3) calculations of the product compositions for the isentropic expansion of detonation products along the Chapman-Jouguet isentrope give freeze-out temperatures in the range of 1000 to 1800 K. These computations were also performed for two ammonium nitrate-fuel oil mixtures and were found to be in good agreement with the experimental data.

• OSTI ID: 6967655
• Journal Information: Combust. Flame; (United States), Journal Name: Combust. Flame; (United States) Vol. 50; ISSN CBFMA
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450100* -- Military Technology
Weaponry
& National Defense-- Chemical Explosions & Explosives
COLLOIDS
DETONATIONS
DISPERSIONS
EQUATIONS
EQUATIONS OF STATE
EXPLOSIVES
GELS
HYDROGEN COMPOUNDS
OXYGEN COMPOUNDS
PARAMETRIC ANALYSIS
VELOCITY
WATER