Fluid Mechanics and Acoustics Laboratory - UMR 5509

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Home > Teams > Turbulence & Instabilities > Publications T&I et posters doctorants > Former five-year period > Publications T&I 2014

Article in Plasma Phys. Control. Fusion (2014)

The effect of toroidicity on reversed field pinch dynamics

Jorge A. Morales, Wouter J. T. Bos, Kai Schneider & David C. Montgomery

The effect of toroidicity on reversed field pinch dynamics

The influence of the curvature of the imposed magnetic field on reversed field pinch dynamics is investigated by comparing the flow of a magnetofluid in a torus with aspect ratio 1.83, with the flow in a periodic cylinder. It is found that an axisymmetric toroidal mode is always present in the toroidal, but absent in the cylindrical configuration. In particular, in contrast to the cylinder, the toroidal case presents a double poloidal recirculation cell with a shear localized at the plasma edge. Quasi-single-helicity states are found to be more persistent in toroidal than in periodic cylinder geometry.

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