TY - JOUR

T1 - Lagrangian structures and transport in turbulent magnetized plasmas

AU - Padberg, Kathrin

AU - Hauff, Thilo

AU - Jenko, Frank

AU - Junge, Oliver

PY - 2007/11/6

Y1 - 2007/11/6

N2 - Using 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.

AB - Using 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.

KW - Didactics of Mathematics

UR - http://www.scopus.com/inward/record.url?scp=36048958643&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/b3021cf6-773e-3d32-aefe-6f6ab796348a/

U2 - 10.1088/1367-2630/9/11/400

DO - 10.1088/1367-2630/9/11/400

M3 - Journal articles

AN - SCOPUS:36048958643

VL - 9

JO - New Journal of Physics

JF - New Journal of Physics

SN - 1367-2630

IS - November

M1 - 400

ER -