The fluid-dynamical approach developed in Refs. [1, 2] and based on the behaviorof the Finite Time Lyapunov Exponent (FTLE) field, associated to the magneticconfiguration is applied to investigate a real situation [3]. We consider the magneticfield characterizing the emergence of self-organized quasi-helical states [4], predictedby magnetohydrodynamic (MHD) simulations [5] and observed in high current experimentsin the reversed field pinch configurations. The associated FTLE fieldshows the presence of ridges, that can be recognized as Lagrangian Coherent Structures(LCSs) for the magnetic field. These structures actually limit the field linesmotion and provide a chaos healing e?ect, by influencing the transport propertiesof the system.
Transport processes characterizing the Quasi-Single-Helicity states in RFX-mod
Grasso D.;Bonfiglio D.;Borgogno D.;Cappello S.;Rubino G.;Veranda M.
2015
Abstract
The fluid-dynamical approach developed in Refs. [1, 2] and based on the behaviorof the Finite Time Lyapunov Exponent (FTLE) field, associated to the magneticconfiguration is applied to investigate a real situation [3]. We consider the magneticfield characterizing the emergence of self-organized quasi-helical states [4], predictedby magnetohydrodynamic (MHD) simulations [5] and observed in high current experimentsin the reversed field pinch configurations. The associated FTLE fieldshows the presence of ridges, that can be recognized as Lagrangian Coherent Structures(LCSs) for the magnetic field. These structures actually limit the field linesmotion and provide a chaos healing e?ect, by influencing the transport propertiesof the system.| File | Dimensione | Formato | |
|---|---|---|---|
|
prod_337111-doc_105502.pdf
solo utenti autorizzati
Descrizione: Transport processes characterizing the Quasi_Single_Helicity states in RFX_mod
Tipologia:
Versione Editoriale (PDF)
Licenza:
Nessuna licenza dichiarata (non attribuibile a prodotti successivi al 2023)
Dimensione
28.35 kB
Formato
Adobe PDF
|
28.35 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
