Abstract
Arbitrary Lagrangian Eulerian (ALE) methods have existed for several decades. However, three-dimensional Multi-Material Arbitrary Lagrangian Eulerian (MMALE) methods for unstructured grids are relatively new. MMALE algorithms provide the framework to model sections of a simulation as either Lagrangian, ALE, or Eulerian. In addition, sections of a simulation can switch in time between mesh motions as the distortion of the problem dictates. The MMALE method provides the accuracy of Lagrangian mesh motion and the robustness of Eulerian mesh motion within the same framework. Extending this method to unstructured grids allows for more accurate representation of curved surfaces and complex geometries. This paper examines the algorithms required for the MMALE method and the extensions to these algorithms for unstructured meshes. In addition, second-order behavior of the MMALE algorithm as it exists in the high energy density physics code Arbitrary Lagrangian Eulerian General Research Applications code (ALEGRA) is demonstrated, along with a practical example of its usefulness.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Computer Methods in Applied Mechanics and Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
