Current collection by a long conducting cylinder in a flowing magnetized plasmaThe numerical techniques, the definitions, and the normalizations used in the simulations of plasma flow past a long conducting cylinder with a magnetic field along the cylinder axis are described. The effect of cross-field plasma transport on the current collection without any contribution to the current from the field-aligned motion of the plasma particles is highlighted. The electric fields in the structure create a two-cell circulation of the electrons near the cylinder. The cell in the wake region has negative potentials. A fan-shaped circulation cell forms around the cylinder and in this cell the potential is generally positive. The geometry and the size of this positive cell affect the current collection. The potential structure around the cylinder is examined, along with its effect on the current collection and its oscillatory behavior. The variation of the time-average current as a function of the relative motion between the plasma and the cylinder is also investigated.
Document ID
19900032936
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Singh, Nagendra (Alabama Univ. Huntsville, AL, United States)
Vashi, Bharat I. (Alabama, University Huntsville, United States)