Multiscale Approach to Shock to Detonation Transition in Energetic Materials
Abstract
In this study we present a multiscale approach for coupling the dynamics of void collapse at the microscale to simulations at the mesoscale. We solve the reactive Euler equations, with the energy equation augmented by a power deposition term. The reaction rate at the mesoscale is modelled using a pressure–dependent power law. The deposition term is based on previous simulations of void collapse, modelled at the mesoscale as hot–spots. The equation of state was previously calibrated for PBX 9501. The run–to–detonation distance is calculated as part of the numerical solution procedure. Results for 1–D, 2–D homogeneous, and 2–D heterogeneous medium are presented, and show good agreement to experimental data.
- Authors:
-
[3]
- Univ. of Florida, Gainesville, FL (United States). Dept. of Mechanical and Aerospace Engineering
- Florida Inst. of Technology, Melbourne, FL (United States). Dept. of Mechanical and Aerospace Engineering
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1576936
- Alternate Identifier(s):
- OSTI ID: 1573851
- Report Number(s):
- LA-UR-19-24883
Journal ID: ISSN 0721-3115
- Grant/Contract Number:
- 89233218CNA000001
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Propellants, Explosives, Pyrotechnics
- Additional Journal Information:
- Journal Volume: 45; Journal Issue: 2; Journal ID: ISSN 0721-3115
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; multiscale; mesoscale simulations; detonation initation; void collapse; thermal deposition; energetic materials
Citation Formats
Jackson, Thomas L., Zhang, Ju, and Short, Mark. Multiscale Approach to Shock to Detonation Transition in Energetic Materials. United States: N. p., 2019.
Web. doi:10.1002/prep.201900179.
Jackson, Thomas L., Zhang, Ju, & Short, Mark. Multiscale Approach to Shock to Detonation Transition in Energetic Materials. United States. https://doi.org/10.1002/prep.201900179
Jackson, Thomas L., Zhang, Ju, and Short, Mark. Mon .
"Multiscale Approach to Shock to Detonation Transition in Energetic Materials". United States. https://doi.org/10.1002/prep.201900179. https://www.osti.gov/servlets/purl/1576936.
@article{osti_1576936,
title = {Multiscale Approach to Shock to Detonation Transition in Energetic Materials},
author = {Jackson, Thomas L. and Zhang, Ju and Short, Mark},
abstractNote = {In this study we present a multiscale approach for coupling the dynamics of void collapse at the microscale to simulations at the mesoscale. We solve the reactive Euler equations, with the energy equation augmented by a power deposition term. The reaction rate at the mesoscale is modelled using a pressure–dependent power law. The deposition term is based on previous simulations of void collapse, modelled at the mesoscale as hot–spots. The equation of state was previously calibrated for PBX 9501. The run–to–detonation distance is calculated as part of the numerical solution procedure. Results for 1–D, 2–D homogeneous, and 2–D heterogeneous medium are presented, and show good agreement to experimental data.},
doi = {10.1002/prep.201900179},
journal = {Propellants, Explosives, Pyrotechnics},
number = 2,
volume = 45,
place = {United States},
year = {Mon Nov 11 00:00:00 EST 2019},
month = {Mon Nov 11 00:00:00 EST 2019}
}
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