Effects of compressibility and heating in magnetohydrodynamics simulations of a reversed field pinch

被引：9

作者：

Onofri, M. ^{[1
]}

Malara, F. ^{[1
]}

Veltri, P. ^{[1
]}

机构：

[1] Univ Calabria, Dipartmento Fis, I-87036 Arcavacata Di Rende, Italy

来源：

PHYSICS OF PLASMAS | 2009年 / 16卷 / 05期

关键词：

plasma magnetohydrodynamics; plasma simulation; plasma thermodynamics; plasma transport processes; reversed field pinch; RECONNECTION; RELAXATION; SINGLE; SUSTAINMENT; BIFURCATION; PLASMA; MHD;

D O I：

10.1063/1.3139248

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The reversed field pinch is studied using numerical simulations of the compressible magnetohydrodynamics equations. Contrary to what has been done in previous works, the hypotheses of constant density and vanishing pressure are not used. Two cases are investigated. In the first case the pressure is derived from an adiabatic condition and in the second case the pressure equation includes heating terms due to resistivity and viscosity. The evolution of the reversal parameter and the production of single helicity or multiple helicity states are different in the two cases. The simulations show that the results are affected by compressibility and are very sensitive to hypotheses on heat production.

引用

页数：9

共 25 条

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