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Numerical simulation of the reversed field pinch dynamo effect in the quasilinear, mean field equilibrium limit

 

作者: E. J. Caramana,  

 

期刊: Physics of Fluids B: Plasma Physics  (AIP Available online 1989)
卷期: Volume 1, issue 11  

页码: 2186-2193

 

ISSN:0899-8221

 

年代: 1989

 

DOI:10.1063/1.859032

 

出版商: AIP

 

数据来源: AIP

 

摘要:

In this paper numerical simulations are presented of the reversed field pinch (RFP) dynamo effect utilizing the resistive magnetohydrodynamic (MHD) equations in the quasilinear approximation. In addition, a mean field equilibrium magnetic field configuration is constructed in cylindrical geometry by dropping inertia on the symmetric radial component of the velocity field. Results are obtained for a variety of operating conditions: flat‐top current, current ramp‐up, and ramp‐down. It is found that the Alfve´n time, although present in the equations describing the perturbed quantities, is not important on the long resistive run time; the result is a three‐dimensional Ohmic equilibrium with symmetric mean toroidal magnetic field reversal. Using these results, and in view of recent RFP experimental data, a simple correspondence between global MHD behavior in the RFP and the tokamak is given.

 

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