A Fractional diffusion models of non-local perturbative transport: numerical results and application to JET experiments (Articolo in rivista)

Type
Label
  • A Fractional diffusion models of non-local perturbative transport: numerical results and application to JET experiments (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0029-5515/48/7/075009 (literal)
Alternative label
  • del-Castillo-Negrete, D.[ 2 ] ; Mantica, P.[ 3 ] ; Naulin, V.[ 4 ] ; Rasmussen, J. J.[ 4 ]; and JET EFDA contributors (2008)
    A Fractional diffusion models of non-local perturbative transport: numerical results and application to JET experiments
    in Nuclear fusion; IOP Publishing Ltd., Bristol BS1 6BE (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • del-Castillo-Negrete, D.[ 2 ] ; Mantica, P.[ 3 ] ; Naulin, V.[ 4 ] ; Rasmussen, J. J.[ 4 ]; and JET EFDA contributors (literal)
Pagina inizio
  • 075009 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/0029-5515/48/7/075009/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 48 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] Culham Sci Ctr, JET EFDA, Abingdon OX14 3DB, Oxon, England [ 2 ] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA [ 3 ] CNR, ENEA, EURATOM Assoc, Istituto di Fisica del Plasma, I-20133 Milan, Italy [ 4 ] Tech Univ Denmark, EURATOM Assoc, RISO, DK-4000 Roskilde, Denmark (literal)
Titolo
  • A Fractional diffusion models of non-local perturbative transport: numerical results and application to JET experiments (literal)
Abstract
  • Perturbative experiments in magnetically confined fusion plasmas have shown that edge cold pulses travel to the centre of the device on a time scale much faster than expected on the basis of diffusive transport. An open issue is whether the observed fast pulse propagation is due to non-local transport mechanisms or if it could be explained on the basis of local transport models. To elucidate this distinction, perturbative experiments involving ICRH power modulation in addition to cold pulses have been conducted in JET for the same plasma. Local transport models have found problematic the reconciliation of the fast propagation of cold pulses with the comparatively slower propagation of heat waves generated by power modulation. In this paper, a non-local model based on the use of fractional diffusion operators is used to describe these experiments. A numerical study of the parameter dependence of the pulse speed and the amplitude and phase of the heat wave is also presented. (literal)
Editore
Prodotto di
Autore CNR

Incoming links:


Prodotto
Autore CNR di
Editore di
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
data.CNR.it