Linear and Nonlinear Development of the m = 0 Instability in Z-Pinch Equilibria with Axial Sheared Flows

Autor:	Volodymyr Makhin, Bruno S. Bauer, I. Paraschiv, Irvin R. Lindemuth
Rok vydání:	2008
Předmět:	Physics Nuclear and High Energy Physics Plasma Mechanics Instability Physics::Fluid Dynamics Nonlinear system Classical mechanics Amplitude Nuclear Energy and Engineering Z-pinch Supersonic speed Magnetohydrodynamic drive Magnetohydrodynamics
Zdroj:	Journal of Fusion Energy. 28:195-199
ISSN:	1572-9591 0164-0313
Popis:	The effect of sheared flows on the m = 0 instability development in a z-pinch is numerically investigated using a 2D magnetohydrodynamic (MHD) code. The behavior of both internal and free-boundary modes is studied by using two types of initial configurations: a diffuse Bennett equilibrium and a free-boundary parabolic equilibrium. It was found that sheared flows change the m = 0 development by reducing the linear growth rates, decreasing the saturation amplitude, and modifying the instability spectrum. Full stability can be obtained for supersonic plasma flows, but a larger shear is needed to obtain stabilization of free-boundary modes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::51b9e423fb6820e8cf9b966e83c6ae39 https://doi.org/10.1007/s10894-008-9174-x Zobrazit plný text záznamu Full text from SpringerLink