Bulletin of the American Physical Society
22nd Biennial Conference of the APS Topical Group on Shock Compression of Condensed Matter
Volume 67, Number 8
Monday–Friday, July 11–15, 2022; Anaheim, California
Session A00: Plenary I
8:00 AM–9:00 AM,
Monday, July 11, 2022
Anaheim Marriott
Room: Platinum 5-6
Chair: John Borg, Marquette Univ
Abstract: A00.00001 : Calculating Overdriven Detonation for Reaction Product Shock States for Pressures Higher than those for Steady Detonation Waves
8:00 AM–9:00 AM
Presenter:
Craig M Tarver
(Lawrence Livermore Natl Lab)
Author:
Craig M Tarver
(Lawrence Livermore Natl Lab)
Collaboration:
M.H. Chew and Associates, Consultants to LLNL
In the 1990s, Nellis, Mitchell, et al 3 measured high pressure Hugoniots of dissociating liquid nitrogen, ionization of water, and CO/CO 2 equilibrium as functions of shock pressure. The shock temperatures of individual dimers and trimers are higher than those for detonation C-J waves, which distribute their internal energy over more product vibrational modes. Thus more N 2 dissociation, more H 2 O ionization, and different CO 2 /CO ratios occur in the Nellis experiments compared to detonation. The large dissociation energy of N 2 has the greatest effect on the CHEETAH chemical equilibrium calculations, as shown by Tarver 1 for HMX and TATB overdriven detonation waves.
References
1. Tarver, C.M., Journal of Physical Chemistry A, 124, 1399 (2020).
2. P. A. Urtiew and B. Hayes, Combustion, Explosion, and Shock Waves 27, 505–514 (1991)
3. W. J. Nellis et al. J. Chem. Phys. 94, 2244–2257 (1991)
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