Free MHD Shear Layers In The Presence Of Rotation And Magnetic Field

Spence, E. J. ; Roach, A. H. ; Edlund, E. M. ; Sloboda, P. ; Ji, H.

Princeton University. Plasma Physics Laboratory.

关键词: Modifications;    Magnetic Fields;    70 Plasma Physics And Fusion Technology;    Numerical Simulation, Shea;    Instability;   

RP-ID  :  PPPL-4747
RP-ID  :  DE-ACO2-09CH11466
RP-ID  :  1037452

美国|英语

来源: UNT Digital Library

【 摘 要 】

We present an experimental and numerical study of hydrodynamic and magnetohydrodynamic free shear layers and their stability. We first examine the experimental measurement of globally unstable hydrodynamic shear layers in the presence of rotation, and their range of instability. These are compared to numerical simulations, which are used to explain the modification of the shear layer and thus the critical Rossby number for stability. Magnetic fields are then applied to these scenarios, and globally unstable magnetohydrodynamic shear layers generated. These too are compared to numerical simulations, showing behavior consistent with the hydrodynamic case and previously reported measurements.