A multi-scale residual-based anti-hourglass control for compatible staggered Lagrangian hydrodynamics
Journal Article
·
· Journal of Computational Physics
- Czech Technical Univ. in Prague, Praha (Czech Republic)
- Duke Univ., Durham, NC (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Univ. of Bordeaux, Talence (France)
Hourglassing is a well-known pathological numerical artifact affecting the robustness and accuracy of Lagrangian methods. There exist a large number of hourglass control/suppression strategies. In the community of the staggered compatible Lagrangian methods, the approach of sub-zonal pressure forces is among the most widely used. However, this approach is known to add numerical strength to the solution, which can cause potential problems in certain types of simulations, for instance in simulations of various instabilities. To avoid this complication, we have adapted the multi-scale residual-based stabilization typically used in the finite element approach for staggered compatible framework. In this study, we describe two discretizations of the new approach and demonstrate their properties and compare with the method of sub-zonal pressure forces on selected numerical problems.
- Research Organization:
- Los Alamos National Laboratory (LANL)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21)
- Grant/Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1408834
- Alternate ID(s):
- OSTI ID: 1576606
- Report Number(s):
- LA-UR-17-20298
- Journal Information:
- Journal of Computational Physics, Journal Name: Journal of Computational Physics Journal Issue: C Vol. 354; ISSN 0021-9991
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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