Constrained optimization framework for interface-aware sub-scale dynamics models for voids closure in Lagrangian hydrodynamics
Abstract
In hydrocodes, voids are used to represent vacuum and model free boundaries between vacuum and real materials. We give a systematic description of a new treatment of void closure in the framework of the multimaterial arbitrary Lagrangian–Eulerian (ALE) methods. This includes a new formulation of the interface-aware sub-scale-dynamics (IA-SSD) closure model for multimaterial cells with voids, which is used in the Lagrangian stage of our indirect ALE scheme. The results of the comprehensive testing of the new model are presented for one- and two-dimensional multimaterial calculations in the presence of voids. Finally, we also present a sneak peek of a realistic shaped charge calculation in the presence of voids and solids.
- Authors:
-
- AWE Aldermaston, Reading, Berkshire (United States). Computational Physics Group
- Czech Technical Univ. in Prague, Prague (Czech Republic). Faculty of Nuclear Sciences and Physical Engineering; Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- 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 National Nuclear Security Administration (NNSA), Office of Defense Programs (DP); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR); Czech Technical University
- OSTI Identifier:
- 1432627
- Alternate Identifier(s):
- OSTI ID: 1532776
- Report Number(s):
- LA-UR-18-22479
Journal ID: ISSN 0021-9991; TRN: US1802408
- Grant/Contract Number:
- AC52-06NA25396; SGS16/247/OHK4/3T/14
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Computational Physics
- Additional Journal Information:
- Journal Volume: 371; Journal ID: ISSN 0021-9991
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 97 MATHEMATICS AND COMPUTING; Lagrangian hydrodynamics; Multimaterial cells; Interface-aware sub-scale closure models; Void closure
Citation Formats
Barlow, Andrew, Klima, Matej, and Shashkov, Mikhail. Constrained optimization framework for interface-aware sub-scale dynamics models for voids closure in Lagrangian hydrodynamics. United States: N. p., 2018.
Web. doi:10.1016/j.jcp.2018.03.034.
Barlow, Andrew, Klima, Matej, & Shashkov, Mikhail. Constrained optimization framework for interface-aware sub-scale dynamics models for voids closure in Lagrangian hydrodynamics. United States. https://doi.org/10.1016/j.jcp.2018.03.034
Barlow, Andrew, Klima, Matej, and Shashkov, Mikhail. Mon .
"Constrained optimization framework for interface-aware sub-scale dynamics models for voids closure in Lagrangian hydrodynamics". United States. https://doi.org/10.1016/j.jcp.2018.03.034. https://www.osti.gov/servlets/purl/1432627.
@article{osti_1432627,
title = {Constrained optimization framework for interface-aware sub-scale dynamics models for voids closure in Lagrangian hydrodynamics},
author = {Barlow, Andrew and Klima, Matej and Shashkov, Mikhail},
abstractNote = {In hydrocodes, voids are used to represent vacuum and model free boundaries between vacuum and real materials. We give a systematic description of a new treatment of void closure in the framework of the multimaterial arbitrary Lagrangian–Eulerian (ALE) methods. This includes a new formulation of the interface-aware sub-scale-dynamics (IA-SSD) closure model for multimaterial cells with voids, which is used in the Lagrangian stage of our indirect ALE scheme. The results of the comprehensive testing of the new model are presented for one- and two-dimensional multimaterial calculations in the presence of voids. Finally, we also present a sneak peek of a realistic shaped charge calculation in the presence of voids and solids.},
doi = {10.1016/j.jcp.2018.03.034},
journal = {Journal of Computational Physics},
number = ,
volume = 371,
place = {United States},
year = {Mon Apr 02 00:00:00 EDT 2018},
month = {Mon Apr 02 00:00:00 EDT 2018}
}
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Works referencing / citing this record:
A non-local void dynamics modeling and simulation using the Proper Generalized Decomposition
journal, May 2019
- Ghnatios, Chady; Simacek, Pavel; Chinesta, Francisco
- International Journal of Material Forming, Vol. 13, Issue 4