Sources of intrinsic rotation in the low flow ordering
ArXiv 1102.4613 (2011)
Abstract:
A low flow, $\delta f$ gyrokinetic formulation to obtain the intrinsic rotation profiles is presented. The momentum conservation equation in the low flow ordering contains new terms, neglected in previous first principles formulations, that may explain the intrinsic rotation observed in tokamaks in the absence of external sources of momentum. The intrinsic rotation profile depends on the density and temperature profiles and on the up-down asymmetry.Up-down symmetry of the turbulent transport of toroidal angular momentum in tokamaks
ArXiv 1102.3717 (2011)
Abstract:
Two symmetries of the local nonlinear delta-f gyrokinetic system of equations in tokamaks in the high flow regime are presented. The turbulent transport of toroidal angular momentum changes sign under an up-down reflection of the tokamak and a sign change of both the rotation and the rotation shear. Thus, the turbulent transport of toroidal angular momentum must vanish for up-down symmetric tokamaks in the absence of both rotation and rotation shear. This has important implications for the modeling of spontaneous rotation.Sources of intrinsic rotation in the low-flow ordering
NUCLEAR FUSION 51:11 (2011) ARTN 113001
Transport bifurcation induced by sheared toroidal flow in tokamak plasmas
PHYSICS OF PLASMAS 18:10 (2011) ARTN 102304
Comment on "nonlinear gyrokinetic theory with polarization drift" [Phys. Plasmas 17, 082304 (2010)]
Physics of Plasmas 17:12 (2010)