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Flow dynamics and magnetic induction in the von-Kármán plasma experiment

Part of: Experiments Fundamental Plasma Physics

Published online by Cambridge University Press:  10 October 2014

N. Plihon ,
G. Bousselin ,
F. Palermo ,
J. Morales ,
W. J. T. Bos ,
F. Godeferd ,
M. Bourgoin ,
J.-F. Pinton ,
M. Moulin  and
A. Aanesland
N. Plihon*
Affiliation:
Laboratoire de Physique, École Normale Supérieure de Lyon, CNRS & Université de Lyon, 46 allée d'Italie, 69364 Lyon Cedex 07, France
G. Bousselin
Affiliation:
Laboratoire de Physique, École Normale Supérieure de Lyon, CNRS & Université de Lyon, 46 allée d'Italie, 69364 Lyon Cedex 07, France
F. Palermo
Affiliation:
Laboratoire de Physique, École Normale Supérieure de Lyon, CNRS & Université de Lyon, 46 allée d'Italie, 69364 Lyon Cedex 07, France LMFA-CNRS, Université de Lyon, École Centrale de Lyon, 69134 Ecully, France
J. Morales
Affiliation:
LMFA-CNRS, Université de Lyon, École Centrale de Lyon, 69134 Ecully, France
W. J. T. Bos
Affiliation:
LMFA-CNRS, Université de Lyon, École Centrale de Lyon, 69134 Ecully, France
F. Godeferd
Affiliation:
LMFA-CNRS, Université de Lyon, École Centrale de Lyon, 69134 Ecully, France
M. Bourgoin
Affiliation:
Laboratoire de Physique, École Normale Supérieure de Lyon, CNRS & Université de Lyon, 46 allée d'Italie, 69364 Lyon Cedex 07, France
J.-F. Pinton
Affiliation:
Laboratoire de Physique, École Normale Supérieure de Lyon, CNRS & Université de Lyon, 46 allée d'Italie, 69364 Lyon Cedex 07, France
M. Moulin
Affiliation:
Laboratoire de Physique, École Normale Supérieure de Lyon, CNRS & Université de Lyon, 46 allée d'Italie, 69364 Lyon Cedex 07, France
A. Aanesland
Affiliation:
Laboratoire de Physique des Plasmas (CNRS, École Polytechnique, Sorbonne Universités, UPMC Univ Paris 06, Univ Paris-Sud), École Polytechnique, 91128 Palaiseau, France
*
†Email address for correspondence: nicolas.plihon@ens-lyon.fr
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Abstract

The von-Kármán plasma experiment is a novel versatile experimental device designed to explore the dynamics of basic magnetic induction processes and the dynamics of flows driven in weakly magnetized plasmas. A high-density plasma column (1016–1019 particles. m−3) is created by two radio-frequency plasma sources located at each end of a 1 m long linear device. Flows are driven through J × B azimuthal torques created from independently controlled emissive cathodes. The device has been designed such that magnetic induction processes and turbulent plasma dynamics can be studied from a variety of time-averaged axisymmetric flows in a cylinder. MHD simulations implementing volume-penalization support the experimental development to design the most efficient flow-driving schemes and understand the flow dynamics. Preliminary experimental results show that a rotating motion of up to nearly 1 km/s is controlled by the J × B azimuthal torque.

Type
Research Article
Information
Journal of Plasma Physics , Volume 81 , Issue 1 , January 2015 , 345810102
Copyright
Copyright © Cambridge University Press 2014 

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