A numerical study of rotating magnetic fields as a current drive for field reversed configurations

1999 ◽  
Vol 6 (7) ◽  
pp. 2771-2780 ◽  
Author(s):  
Richard D. Milroy
Keyword(s):  
Magnetic Fields ◽  
Numerical Study ◽  
Current Drive ◽  
Rotating Magnetic Fields ◽  
Field Reversed Configurations ◽  
A Current

scholarly journals Power and Momentum Relations in Rotating Magnetic Field Current Drive

1984 ◽  
Vol 37 (5) ◽  
pp. 509 ◽  
Author(s):  
WN Hugrass
Keyword(s):  
Magnetic Field ◽  
Angular Momentum ◽  
Magnetic Fields ◽  
Phase Velocity ◽  
Current Drive ◽  
Rotating Magnetic Field ◽  
Plasma Current ◽  
Rotating Magnetic Fields ◽  
Frequency Source ◽  
Rotating Field

The use of rotating magnetic fields (RMF) to drive steady currents in plasmas involves a transfer of energy and angular momentum from the radio frequency source feeding the rotating field coils to the plasma. The. power-torque relationships in RMF systems are discussed and the analogy between RMF current drive and the polyphase induction motor is explained. The general relationship between the energy and angular momentum transfer is utilized to calculate the efficiency of the RMF plasma current drive. It is found that relatively high efficiencies can be achieved in RMF current drive because of the low phase velocity and small slip between the rotating field and the electron fluid.

Particle Actuation by Rotating Magnetic Fields in Microchannels: A Numerical Study

Soft Matter ◽  
2021 ◽  
Author(s):  
Seokgyun Ham ◽  
Wen-Zhen Fang ◽  
Rui Qiao
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Magnetic Particles ◽  
Numerical Study ◽  
Rotating Magnetic Field ◽  
Rotating Magnetic Fields ◽  
Translation Motion

Magnetic particles confined in microchannels can be actuated to perform translation motion using a rotating magnetic field, but their actuation in such a situation is not yet well understood. Here,...

scholarly journals A General Physical Model for RMF Current Drive

1988 ◽  
Vol 41 (6) ◽  
pp. 765 ◽  
Author(s):  
WN Hugrass
Keyword(s):  
Magnetic Fields ◽  
Standard Model ◽  
General Model ◽  
Current Drive ◽  
Unified Approach ◽  
Rotating Magnetic Fields ◽  
Model Based ◽  
The Standard Model ◽  
General Physical ◽  
Theoretical Results

Rotating magnetic fields (RMF) have been used successfuly to drive steady currents in plasmas in many experiments. Some recent experimental and theoretical results did not seem to agree with the standard model based on assuming that the electrons are 'tied' to the lines of the RMF. A more general model based on the concept of flux preserving motion is developed in this paper. It appears that this model provides a unified approach for predicting the qualitative features of RMF current drive under a variety of conditions.

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