A numerical study of shock waves generated through laser ablation of explosives
Abstract
Shock waves resulting from irradiation of energetic materials with a pulsed ultraviolet laser source have been shown to be an effective indicator for explosives detection. In this study, the features of shock wave propagation are explored theoretically. The initial stage of the shock motion is simulated as a one-dimensional process. As the nonlinear wave expands to form a blast wave, a system of conservation equations, simplified to the Euler equations, is employed to model wave propagation. The Euler equations are solved numerically by the 5th order weighted essentially non-oscillatory finite difference scheme with the time integration carried out using the 3rd order total variation diminishing Runge Kutta method. The numerical results for the shock wave evolution are compared with those obtained from experiments with a meltcast 2,6-dinitrotoluene sample. The calculations lay a theoretical foundation for a recently investigated technique for photoacoustically sensing explosives using a vibrometer.
- Authors:
-
- Brown Univ., Providence, RI (United States). Dept. of Chemistry
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Lincoln Lab.
- Publication Date:
- Research Org.:
- Brown Univ., Providence, RI (United States)
- Sponsoring Org.:
- USDOE; US Department of the Navy, Office of Naval Research (ONR)
- OSTI Identifier:
- 1465123
- Alternate Identifier(s):
- OSTI ID: 1332373
- Grant/Contract Number:
- sc0001082; N00014-15-MP-00407
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Applied Physics
- Additional Journal Information:
- Journal Volume: 120; Journal Issue: 19; Journal ID: ISSN 0021-8979
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; 45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; materials properties; acoustic waves; Doppler effect; laser materials; laser ablation; ultraviolet lasers; blast waves; mach numbers
Citation Formats
Bai, Wenyu, Diebold, Gerald J., Wynn, Charles M., Haupt, Robert W., and Doherty, John H. A numerical study of shock waves generated through laser ablation of explosives. United States: N. p., 2016.
Web. doi:10.1063/1.4967825.
Bai, Wenyu, Diebold, Gerald J., Wynn, Charles M., Haupt, Robert W., & Doherty, John H. A numerical study of shock waves generated through laser ablation of explosives. United States. https://doi.org/10.1063/1.4967825
Bai, Wenyu, Diebold, Gerald J., Wynn, Charles M., Haupt, Robert W., and Doherty, John H. Thu .
"A numerical study of shock waves generated through laser ablation of explosives". United States. https://doi.org/10.1063/1.4967825. https://www.osti.gov/servlets/purl/1465123.
@article{osti_1465123,
title = {A numerical study of shock waves generated through laser ablation of explosives},
author = {Bai, Wenyu and Diebold, Gerald J. and Wynn, Charles M. and Haupt, Robert W. and Doherty, John H.},
abstractNote = {Shock waves resulting from irradiation of energetic materials with a pulsed ultraviolet laser source have been shown to be an effective indicator for explosives detection. In this study, the features of shock wave propagation are explored theoretically. The initial stage of the shock motion is simulated as a one-dimensional process. As the nonlinear wave expands to form a blast wave, a system of conservation equations, simplified to the Euler equations, is employed to model wave propagation. The Euler equations are solved numerically by the 5th order weighted essentially non-oscillatory finite difference scheme with the time integration carried out using the 3rd order total variation diminishing Runge Kutta method. The numerical results for the shock wave evolution are compared with those obtained from experiments with a meltcast 2,6-dinitrotoluene sample. The calculations lay a theoretical foundation for a recently investigated technique for photoacoustically sensing explosives using a vibrometer.},
doi = {10.1063/1.4967825},
journal = {Journal of Applied Physics},
number = 19,
volume = 120,
place = {United States},
year = {Thu Nov 17 00:00:00 EST 2016},
month = {Thu Nov 17 00:00:00 EST 2016}
}
Web of Science
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