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Title: Fully Implict Magneto-hydrodynamics Simulations of Coaxial Plasma Accelerators

The resistive Magneto-Hydrodynamic (MHD) model describes the behavior of a strongly ionized plasma in the presence of external electric and magnetic fields. We developed a fully implicit MHD simulation tool to solve the resistive MHD governing equations in the context of a cell-centered finite-volume scheme. The primary objective of this study is to use the fully-implicit algorithm to obtain insights into the plasma acceleration and jet formation processes in Coaxial Plasma accelerators; electromagnetic acceleration devices that utilize self-induced magnetic fields to accelerate thermal plasmas to large velocities. We also carry out plasma-surface simulations in order to study the impact interactions when these high velocity plasma jets impinge on target material surfaces. Scaling studies are carried out to establish some basic functional relationships between the target-stagnation conditions and the current discharged between the coaxial electrodes.
Authors:
 [1] ;  [1]
  1. Univ. of Texas, Austin, TX (United States)
Publication Date:
Grant/Contract Number:
NA0003347; NA0002011
Type:
Accepted Manuscript
Journal Name:
AIAA Aerospace Sciences Meeting
Additional Journal Information:
Journal Volume: 55; Conference: 55th AIAA Aerospace Sciences Meeting, Grapevine, TX (United States), 9-13 Jan 2017; Journal ID: ISSN 1947-7902
Publisher:
American Institute of Aeronautics and Astronautics
Research Org:
Stanford Univ., CA (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
OSTI Identifier:
1363886