Sandia National Laboratories has prime responsibility for neutron generator design and manufacturing, and is committed to developing predictive tools for modeling neutron generator performance. An important aspect of understanding component performance is explosively driven ferroelectric power supply modeling. EMMA (ElectroMechanical Modeling in ALEGRA) is a three dimensional compile time version of Sandia`s ALEGRA code. The code is built on top of the general ALEGRA framework for parallel shock-physics computations but also includes additional capability for modeling the electric potential field in dielectrics. The overall package includes shock propagation due to explosive detonation, depoling of ferroelectric ceramics, electric field calculation and coupling with a general lumped element circuit equation system. The AZTEC parallel iterative solver is used to solve for the electric potential. The DASPK differential algebraic equation package is used to solve the circuit equation system. Sample calculations are described.
[1]
J. S. Peery,et al.
RHALE: A MMALE shock physics code written in C++
,
1993
.
[2]
M. U. Anderson,et al.
Return to the shorted and shunted quartz gauge problem: Analysis with the SUBWAY code
,
1995
.
[3]
M. K. Wong,et al.
Rapid installation of numerical models in multiple parent codes
,
1996
.
[4]
John N. Shadid,et al.
A Comparison of Preconditioned Nonsymmetric Krylov Methods on a Large-Scale MIMD Machine
,
1994,
SIAM J. Sci. Comput..
[5]
John N. Shadid,et al.
Aztec user`s guide. Version 1
,
1995
.