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VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:Turbulence and Sheared Flow in Fusion Plasmas: a Simple Fluid Syst
 em
DTSTART:20170324T103000
DTEND:20170324T113000
DTSTAMP:20260428T051522Z
UID:22d05f5989698e98c4d4cf358c523bfc86762aee9ff8ab546dea4b85
CATEGORIES:Conferences - Seminars
DESCRIPTION:Eduardo Neto\, Instituto de Plasmas e Fusão Nuclear\, Lisboa\
 , P\n\n \nThe operation of fusion reactors by magnetic confinement depend
 s on a good understanding of the turbulent transport. It is known that she
 ar flows are beneficial\, as they can reduce or even suppress radial trans
 port. However\, evidence exists that if the flow is strongly sheared a new
  instability can arise. There is also evidence that differential flows can
  be generated by the plasma itself\, reducing transport-the so-called zona
 l flows.\n \nWe use a simple system of fluid equations and extend to the 
 nonlinear regime the linear results previously obtained. This system captu
 res effects of the micro scales of the plasma in the form of the Ion Tempe
 rature Gradient and the Parallel Velocity Gradient instability and the eff
 ects of an external shear flow. Nonlinear analytical and numerical studies
  allowed to verify that the system contains zonal flows which reduce trans
 port. An effect similar to the Dimits shift was observed. A reduction of t
 ransport by the action of an external shear flow was also observed.\n 
LOCATION:PPB019
STATUS:CONFIRMED
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