ISSN:
1089-7674
Quelle:
AIP Digital Archive
Thema:
Physik
Notizen:
A model of internal transport barriers (ITB) is developed that, in addition to the typical features of ITB models (the phase transition character with a power threshold, barrier front propagation, etc.), exhibits an oscillatory/bursty behavior close to the transition. This behavior comes from the competition between the driving and suppression mechanisms for the turbulence. The onset of the oscillations has a power threshold, Posc, below the power threshold for the transition to the enhanced confinement regime, Pth. In the calculations, Posc∼0.5Pth. This suggests that the oscillations avoid an early transition at Pth=Posc, so any mechanism that eliminates the oscillations may lower the transition power. © 1999 American Institute of Physics.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1063/1.873325
