On the Direct Construction of the Steady Traveling Solution to High Explosive Sandwich, Cylinder and Aquarium Tests via a Streamline Finite Volume Approximation
Abstract
The cylinder, sandwich and aquarium tests are routine experiments used to investigate the performance of high explosives. Here, we present a solution technique which simulates these experiments as two dimensional problems in steady traveling coordinates. Using a coordinate system aligned with the streamlines of the flow, an efficient numerical scheme is developed which uses an approximate Riemann solver to model the change in state across streamlines. The technique can also accommodate arbitrary equations of state for the materials. Two verification exercises show that the algorithm converges at second order. Validation studies using the aquarium experiment agreed well with simulations, though the omission of a material strength model leads to some discrepancies between simulation and experiments for the cylinder test. This computational technique is able to predict the behavior of these common high explosive experiments on the order of minutes on a single processor with very fine spatial resolution, on the order of 10 μm.
 Authors:

 Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
 Publication Date:
 Research Org.:
 Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
 Sponsoring Org.:
 USDOE Office of Science (SC). Advanced Scientific Computing Research (ASCR) (SC21); USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation
 OSTI Identifier:
 1529536
 Alternate Identifier(s):
 OSTI ID: 1530003
 Report Number(s):
 LAUR1825298
Journal ID: ISSN 00219991
 Grant/Contract Number:
 89233218CNA000001; AC5206NA25396
 Resource Type:
 Accepted Manuscript
 Journal Name:
 Journal of Computational Physics
 Additional Journal Information:
 Journal Volume: 395; Journal Issue: C; Journal ID: ISSN 00219991
 Publisher:
 Elsevier
 Country of Publication:
 United States
 Language:
 English
 Subject:
 36 MATERIALS SCIENCE; High Explosives; Approximate Riemann Solver
Citation Formats
Andrews, Stephen A., and Aslam, Tariq. On the Direct Construction of the Steady Traveling Solution to High Explosive Sandwich, Cylinder and Aquarium Tests via a Streamline Finite Volume Approximation. United States: N. p., 2019.
Web. doi:10.1016/j.jcp.2019.06.029.
Andrews, Stephen A., & Aslam, Tariq. On the Direct Construction of the Steady Traveling Solution to High Explosive Sandwich, Cylinder and Aquarium Tests via a Streamline Finite Volume Approximation. United States. doi:10.1016/j.jcp.2019.06.029.
Andrews, Stephen A., and Aslam, Tariq. Thu .
"On the Direct Construction of the Steady Traveling Solution to High Explosive Sandwich, Cylinder and Aquarium Tests via a Streamline Finite Volume Approximation". United States. doi:10.1016/j.jcp.2019.06.029. https://www.osti.gov/servlets/purl/1529536.
@article{osti_1529536,
title = {On the Direct Construction of the Steady Traveling Solution to High Explosive Sandwich, Cylinder and Aquarium Tests via a Streamline Finite Volume Approximation},
author = {Andrews, Stephen A. and Aslam, Tariq},
abstractNote = {The cylinder, sandwich and aquarium tests are routine experiments used to investigate the performance of high explosives. Here, we present a solution technique which simulates these experiments as two dimensional problems in steady traveling coordinates. Using a coordinate system aligned with the streamlines of the flow, an efficient numerical scheme is developed which uses an approximate Riemann solver to model the change in state across streamlines. The technique can also accommodate arbitrary equations of state for the materials. Two verification exercises show that the algorithm converges at second order. Validation studies using the aquarium experiment agreed well with simulations, though the omission of a material strength model leads to some discrepancies between simulation and experiments for the cylinder test. This computational technique is able to predict the behavior of these common high explosive experiments on the order of minutes on a single processor with very fine spatial resolution, on the order of 10 μm.},
doi = {10.1016/j.jcp.2019.06.029},
journal = {Journal of Computational Physics},
number = C,
volume = 395,
place = {United States},
year = {2019},
month = {6}
}
Web of Science