Numerical Considerations in the Modeling of a High Explosive Cylinder Experiment Using an ALE Continuum Mechanics Code

Marvin A Zocher; Tariq D Aslam

doi:10.3390/ma13194448

Numerical Considerations in the Modeling of a High Explosive Cylinder Experiment Using an ALE Continuum Mechanics Code

Materials (Basel). 2020 Oct 7;13(19):4448. doi: 10.3390/ma13194448.

Authors

Marvin A Zocher¹, Tariq D Aslam¹

Affiliation

¹ Los Alamos National Laboratory, Los Alamos, NM 87545, USA.

Abstract

A series of experiments involving the detonation of PBX 9501 encased in a copper cylinder are modeled with the objective of evaluating a proposed set of phenomenological parameters for the Wescott-Stewart-Davis reactive burn model. The numerical analysis is conducted using the Los Alamos continuum mechanics code FLAG. Numerical considerations pertaining to various aspects of modeling the experiments using FLAG are discussed. It is shown that use of the proposed set of phenomenological parameters results in predictions of free-surface velocity that match empirically measured velocities reasonably well.

Keywords: finite volume method; high explosive cylinder; reactive burn model.