Kathrin Padberg et al 2007 New J. Phys. 9 400 doi:10.1088/1367-2630/9/11/400
Lagrangian structures and transport in turbulent magnetized plasmas
Kathrin Padberg1,4, Thilo Hauff2, Frank Jenko2 and Oliver Junge3
Show affiliationsUsing direct numerical simulations, it is established that under realistic conditions, the turbulent transport in magnetized fusion plasmas tends to be in a regime for which the cross-field dynamics of tracers can be described neither by Eulerian nor by random walk approaches. Instead, the concept of Lagrangian coherent structures turns out to be a useful tool for studying such systems. Here, networks of repelling and attracting material lines—acting as barriers for transport—become important. The latter are analogues of the stable and unstable manifolds in the static case. This opens up new possibilities for interpreting and analyzing turbulent transport in magnetized plasmas.
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Issue 11 (November 2007)
Received 1 August 2007
Published 6 November 2007
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Lagrangian structures and transport in turbulent magnetized plasmas
Kathrin Padberg et al 2007 New J. Phys. 9 400
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