Premium
Experiments and 3D Non‐Linear Modelling of Heat Transport in Ergodic Zone on Tore Supra
Author(s) -
Becoulet M.,
Capes H.,
Ghendrih Ph.,
Grosman A.,
Gunn J.,
Hoang G.T.,
Segui J.L.,
Zabiego M.
Publication year - 2000
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/1521-3986(200006)40:3/4<251::aid-ctpp251>3.0.co;2-9
Subject(s) - divertor , tore supra , ergodic theory , physics , harmonics , flattening , temperature gradient , transverse plane , mechanics , computational physics , plasma , tokamak , nuclear physics , meteorology , mathematical analysis , mathematics , structural engineering , quantum mechanics , voltage , astronomy , engineering
The diffusive heat transport is considered numerically taking into account magnetic field line stochasticity in the ergodic divertor configuration on Tore Supra. In the 3D non‐linear simulations the transport coefficients can have a non linear dependence on the temperature: Spitzer for parallel and Bohm‐like for transverse heat conductivities. The simulations reproduce the main experimental features of the temperature field with ergodic divertor: flattening of the averaged temperature profile in ergodic zone, steep gradient near separatrix and small radial modulations, which exhibit the same angle periodicity as the edge resonant harmonics ( q = m / n ) of the ergodic divertor spectrum.