Abstract Details

Momentum Transfer to Rotating Magnetized Plasma from Gun Injected Plasma Slug

Author: Imran Shamim
Submitted: 2005-12-20 23:05:26

Co-authors: A.B.Hassam, R.F.Ellis,D.Witherspoon

Contact Info:
IREAP, University of Maryland, College Park
IREAP, University of Maryland
College Park, MD   20742

Abstract Text:
A numerical experiment is carried out to ascertain momentum transfer to rotating magnetized plasma by firing a plasma slug
into the rotating plasma. An experiment along these lines is envisioned for the Maryland Centrifugal Experiment (MCX) using
a plasma gun developed by Hyper-V Corp. The plasma gun will be located in the axial midplane and fired off-axis into the
rotating MCX plasma annulus. The momentum in the plasma slug can be larger than the total momentum in the MCX plasma. The
numerical experiment is set up so that the two initial momenta are approximately equal. Several numerical firings are done
into a 2D periodic flow in pipe rotating plasma. It is found that upto 70% of the momentum in the slug can be transferred
to the background plasma in one pass. The slug, originally circular or elliptical, is seen to deform into two mushrooms,
characteristic of interchange deformations. A cylindrical simulation is also performed with similar results. It is also
found that for the same initial momentum a higher speed slug gives more momentum transfer than a lower speed higher density
slug. Details of the numerical simulations and a scaling study will be presented.

Work supported by DOE

Characterization: A5

The authors would like to have this poster placed along with other Maryland Centrifugal Experiment (MCX) posters. Thank you very much.

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