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Title: 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:
 [1]
  1. 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}
}