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Title: Resistive MHD calculations with ROXANE

Abstract

We discuss the efficacy of the adaptive mesh refinement (AMR) code ROXANE in performing resistive Magnetohydrodynamic (MHD) simulations. Two-dimensional simulations with ROXANE for a generic Z-pinch setup for imploding a cylindrical liner shows that random hotspots known to occur in other codes in the insulator region are absent here. Furthermore, artificial instabilities present in other codes due to mesh imprinting are not present in ROXANE. The fundamental reasons for the better performance of ROXANE in resistive MHD simulations is the interface treatment in a cell containing two conductors (materials), avoiding the artificial mixing of disparate resistivities.

Authors:
 [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1429990
Report Number(s):
LA-UR-18-22460
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Chitanvis, Shirish Madhav, Scannapieco, Anthony J., and Dai, William Wenlong. Resistive MHD calculations with ROXANE. United States: N. p., 2018. Web. doi:10.2172/1429990.
Chitanvis, Shirish Madhav, Scannapieco, Anthony J., & Dai, William Wenlong. Resistive MHD calculations with ROXANE. United States. doi:10.2172/1429990.
Chitanvis, Shirish Madhav, Scannapieco, Anthony J., and Dai, William Wenlong. Thu . "Resistive MHD calculations with ROXANE". United States. doi:10.2172/1429990. https://www.osti.gov/servlets/purl/1429990.
@article{osti_1429990,
title = {Resistive MHD calculations with ROXANE},
author = {Chitanvis, Shirish Madhav and Scannapieco, Anthony J. and Dai, William Wenlong},
abstractNote = {We discuss the efficacy of the adaptive mesh refinement (AMR) code ROXANE in performing resistive Magnetohydrodynamic (MHD) simulations. Two-dimensional simulations with ROXANE for a generic Z-pinch setup for imploding a cylindrical liner shows that random hotspots known to occur in other codes in the insulator region are absent here. Furthermore, artificial instabilities present in other codes due to mesh imprinting are not present in ROXANE. The fundamental reasons for the better performance of ROXANE in resistive MHD simulations is the interface treatment in a cell containing two conductors (materials), avoiding the artificial mixing of disparate resistivities.},
doi = {10.2172/1429990},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Mar 22 00:00:00 EDT 2018},
month = {Thu Mar 22 00:00:00 EDT 2018}
}

Technical Report:

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