Title
Conservative High-Order Time Integration For Lagrangian Hydrodynamics
Abstract
This work develops novel time integration methods for the compressible Euler equations in the Lagrangian frame that are of arbitrary high order and exactly preserve the mass, momentum, and total energy of the system. The equations are considered in nonconservative form, that is, common for staggered grid hydrodynamics (SGH) methods; namely, the evolved quantities are mass, momentum, and internal energy. A general family of time integration schemes is formulated, and practical pairs for orders three and four are derived. Numerical results on standard hydrodynamics benchmarks confirm the high-order convergence on smooth problems and the exact numerical preservation of all physically conserved quantities.
Year
DOI
Venue
2021
10.1137/20M1314495
SIAM JOURNAL ON SCIENTIFIC COMPUTING
Keywords
DocType
Volume
Lagrangian hydrodynamics, high-order time integration, energy conservation, IMEX Runge-Kutta pairs
Journal
43
Issue
ISSN
Citations 
1
1064-8275
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Adrian Sandu100.34
Vladimir Tomov211.03
Lenka Cervena300.34
Tzanio Kolev401.35