Some New Verification Test Problems for Multimaterial Diffusion on Meshes that are Non-Aligned with Material Boundaries

Dawes, Alan Sidney¹  Malone, Christopher M.¹  Shashkov, Mikhail Jurievich¹ 

[1] Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

关键词: Diffusion Verification Multimaterial;   

DOI  :  10.2172/1261787
RP-ID  :  LA-UR--16-24696
PID  :  OSTI ID: 1261787

学科分类：材料科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

In this report a number of new verification test problems for multimaterial diffusion will be shown. Using them we will show that homogenization of multimaterial cells in either Arbitrary Lagrangian Eulerian (ALE) or Eulerian simulations can lead to errors in the energy flow at the interfaces. Results will be presented that show that significant improvements and predictive capability can be gained by using either a surrogate supermesh, such as Thin Mesh in FLAG, or the emerging method based on Static Condensation.