Lagrangian structures and transport in turbulent magnetized plasmas
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Lagrangian structures and transport in turbulent magnetized plasmas. / Padberg, Kathrin; Hauff, Thilo; Jenko, Frank et al.
in: New Journal of Physics, Jahrgang 9, Nr. November, 400, 06.11.2007.Publikation: Beiträge in Zeitschriften › Zeitschriftenaufsätze › Forschung › begutachtet
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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 -