Explosive Products EOS: Adjustment for detonation speed and energy release
Abstract
Propagating detonation waves exhibit a curvature effect in which the detonation speed decreases with increasing front curvature. The curvature effect is due to the width of the wave profile. Numerically, the wave profile depends on resolution. With coarse resolution, the wave width is too large and results in a curvature effect that is too large. Consequently, the detonation speed decreases as the cell size is increased. We propose a modification to the products equation of state (EOS) to compensate for the effect of numerical resolution; i.e., to increase the CJ pressure in order that a simulation propagates a detonation wave with a speed that is on average correct. The EOS modification also adjusts the release isentrope to correct the energy release.
- Authors:
-
- 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
- OSTI Identifier:
- 1154960
- Report Number(s):
- LA-UR-14-26963
- DOE Contract Number:
- AC52-06NA25396
- Resource Type:
- Technical Report
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 97 MATHEMATICS AND COMPUTING; EQUATION OF STATE; DETONATION WAVE
Citation Formats
Menikoff, Ralph. Explosive Products EOS: Adjustment for detonation speed and energy release. United States: N. p., 2014.
Web. doi:10.2172/1154960.
Menikoff, Ralph. Explosive Products EOS: Adjustment for detonation speed and energy release. United States. https://doi.org/10.2172/1154960
Menikoff, Ralph. 2014.
"Explosive Products EOS: Adjustment for detonation speed and energy release". United States. https://doi.org/10.2172/1154960. https://www.osti.gov/servlets/purl/1154960.
@article{osti_1154960,
title = {Explosive Products EOS: Adjustment for detonation speed and energy release},
author = {Menikoff, Ralph},
abstractNote = {Propagating detonation waves exhibit a curvature effect in which the detonation speed decreases with increasing front curvature. The curvature effect is due to the width of the wave profile. Numerically, the wave profile depends on resolution. With coarse resolution, the wave width is too large and results in a curvature effect that is too large. Consequently, the detonation speed decreases as the cell size is increased. We propose a modification to the products equation of state (EOS) to compensate for the effect of numerical resolution; i.e., to increase the CJ pressure in order that a simulation propagates a detonation wave with a speed that is on average correct. The EOS modification also adjusts the release isentrope to correct the energy release.},
doi = {10.2172/1154960},
url = {https://www.osti.gov/biblio/1154960},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Sep 05 00:00:00 EDT 2014},
month = {Fri Sep 05 00:00:00 EDT 2014}
}