ALEGRA : an arbitrary Lagrangian-Eulerian multimaterial, multiphysics code.
ALEGRA is an arbitrary Lagrangian-Eulerian (multiphysics) computer code developed at Sandia National Laboratories since 1990. The code contains a variety of physics options including magnetics, radiation, and multimaterial flow. The code has been developed for nearly two decades, but recent work has dramatically improved the code's accuracy and robustness. These improvements include techniques applied to the basic Lagrangian differencing, artificial viscosity and the remap step of the method including an important improvement in the basic conservation of energy in the scheme. We will discuss the various algorithmic improvements and their impact on the results for important applications. Included in these applications are magnetic implosions, ceramic fracture modeling, and electromagnetic launch.
- Research Organization:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 952827
- Report Number(s):
- SAND2008-0038C; TRN: US200914%%40
- Resource Relation:
- Conference: Proposed for presentation at the AIAA Aerospace Sciences Meeting held December 8-12, 2008 in Reno, NV.
- Country of Publication:
- United States
- Language:
- English
Similar Records
A Methodology to Validate 3-D Arbitrary Lagrangian Eulerian Codes with Applications to Alegra
Arbitrary Lagrangian–Eulerian methods for modeling high-speed compressible multimaterial flows