Improved Solver Settings for 3D Exploding Wire Simulations in ALEGRA

Abstract

We are interested in simulating a variety of problems in 3 dimensions featuring large electric currents using the Sandia National Laboratories multiphysics code, ALEGRA. However, many such simulations were prohibitively slow due in part to unoptimized (matrix) solver settings. In this report, we address that by varying 6 parameters in the algebraic multigrid preconditioner, Trilinos/ML, as implemented in ALEGRA. Three parameters impacted performance with one dominating. We provide insight to solver behavior as well as recommended values.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2016
Accession Number
AD1015402

Entities

People

  • Chris Siefert
  • John Niederhaus
  • Robert Doney

Organizations

  • Sandia National Laboratories
  • United States Army Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Algorithms
  • Cells
  • Central Processing Units
  • Charge Density
  • Conductivity
  • Department Of Defense
  • Electric Current
  • Electrical Conductivity
  • Electromagnetic Fields
  • Electromagnetic Radiation
  • Equations
  • Exploding Wires
  • Magnetic Fields
  • Materials
  • Military Research
  • Simulations
  • Three Dimensional

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Pulsed Power and Plasma Physics.