WHYRAC, a New Modular One-Dimensional Exploding Wire Code

A new one-dimensional code, WHYRAC, intended to provide a comprehensive treatment of exploding wires and wire arrays, is described. The circuit equations treat the wire plasma in an exact way, rather than using a lumped circuit model. Great care has been taken in the Eulerian MHD treatment of plasma...

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Bibliographic Details
Main Authors: Colombant,Denis G, Lampe,Martin, Bloomberg,H W
Format: Report
Language:English
Subjects:
ARRAYS
CIRCUIT ANALYSIS
COMPUTER PROGRAMMING
Computer Programming and Software
ENERGY CONSERVATION
EXPLODING WIRES
LPN-NRL-H02-26K
MACHINE CODING
MAGNETOHYDRODYNAMICS
MATHEMATICAL ANALYSIS
NUMERICAL METHODS AND PROCEDURES
PE62704H
PINCH EFFECT
PLASMA GENERATORS
Plasma Physics and Magnetohydrodynamics
RADIATIVE TRANSFER
TRANSPORT PROPERTIES
WHYRAC
WU12
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Summary:A new one-dimensional code, WHYRAC, intended to provide a comprehensive treatment of exploding wires and wire arrays, is described. The circuit equations treat the wire plasma in an exact way, rather than using a lumped circuit model. Great care has been taken in the Eulerian MHD treatment of plasma motion, resulting in an unusual combination of rapid running capability to handle density ranges spanning at least four orders of magnitude, and very accurate energy conservation in the overall circuit. The code is written in a modular and flexible way, to permit continual upgrading, and extension to different elements, of the atomic physics and radiation transport packages. At present, a fairly simple, rapid-running model (one line per ionization level, localized treatment of radiation transport) is used to provide transport at each time step. A much more extensive, state-of-the-art, atomic/radiation code is used to generate output radiation spectra when required, and to benchmark the energy transport package. The report gives special attention to the treatment of numerical problems in WHYRAC. (Author)