Accession Number:

ADA456102

Title:

SPARC - A Simulation Model for Electrical Charges

Descriptive Note:

Memorandum rept. Aug 2005-Aug 2006

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Report Date:

2006-09-20

Pagination or Media Count:

41.0

Abstract:

A simulation model for electrical discharges which is capable of modeling streamer and leader propagation over long distances is described. The model couples an electrostatic field solver, a chemistry package, and a package for solving the hydrodynamic equations for a multi-species plasma. Optionally, an implicit solution of the fluid equations for the electrons can be used to allow for long time steps. Due to the computationally demanding nature of the problem, the code features a semi-adaptive grid based on a sliding re-zone technique. The code is also parallelized and has been successfully scaled to hundreds of processors. Sample results are given showing streamer propagation over long distances, the streamer to leader transition, and hydrodynamic expansion of the hot gas.

Subject Categories:

  • Numerical Mathematics
  • Computer Hardware
  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE