In:
Physics of Plasmas, AIP Publishing, Vol. 9, No. 12 ( 2002-12-01), p. 5111-5115
Abstract:
The effect of gas flow on the helical instability of arcs is studied by using a linear time dependent perturbation theory in this paper. Based on a set of electrostatic magnetohydrodynamic equations, the corresponding equations and the boundary conditions are derived in the presence of a vortical gas flow, combined by a rotation and an axial component (the rotating flow and the axial flow). The effects of rotating flow, axial flow, and both of them on the arc stability are discussed, respectively. The marginal Maecker’s number and the growth rate of the helical instability are given. Computational results show that the gas flow stabilizes the arc helical instability. In particular, the axial flow (the axial component) plays a more important role in practical applications.
Type of Medium:
Online Resource
ISSN:
1070-664X
,
1089-7674
Language:
English
Publisher:
AIP Publishing
Publication Date:
2002
detail.hit.zdb_id:
1472746-8
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