Results 11 to 20 of about 903 (221)
Neoclassical transport in stellarators [PDF]
The Physics of Fluids, 1987 The stellarator neoclassical transport caused by particles trapped in local helical wells is calculated in the low-collisionality regime using a systematic expansion. The behavior of electron transport is found to be the same over a wide range of energies but the behavior of ion transport for low-energy ions is found to be different than that for high ...
Ho, Darwin D.-M., Kulsrud, Russell M.
openaire +3 more sources
Rotation and neoclassical ripple transport in ITER [PDF]
Nuclear Fusion, 2017 Neoclassical transport in the presence of non-axisymmetric magnetic fields causes a toroidal torque known as neoclassical toroidal viscosity (NTV). The toroidal symmetry of ITER will be broken by the finite number of toroidal field coils and by test blanket modules (TBMs).
E.J. Paul +5 more
openaire +3 more sources
On neoclassical impurity transport in stellarator geometry [PDF]
Plasma Physics and Controlled Fusion, 2013 The impurity dynamics in stellarators has become an issue of moderate concern due to the inherent tendency of the impurities to accumulate in the core when the neoclassical ambipolar radial electric field points radially inwards (ion root regime).
Garcia-Regana, J. +5 more
openaire +4 more sources
Classical and Neoclassical Transport in Tokamaks [PDF]
Fusion Science and Technology, 2012 These lecture notes provide a short overview of classical and neoclassical transport in tokamaks.
openaire +3 more sources
Neoclassical transport simulations for stellarators [PDF]
Physics of Plasmas, 2011 The benchmarking of the thermal neoclassical transport coefficients is described using examples of the Large Helical Device (LHD) and TJ-II stellarators. The thermal coefficients are evaluated by energy convolution of the monoenergetic coefficients obtained by direct interpolation or neural network techniques from the databases precalculated by ...
Turkin, Y. +5 more
openaire +3 more sources
Neoclassical transport in a elliptic tokamak [PDF]
The Physics of Fluids, 1977 Neoclassical transport for an elliptic tokamak in all collisional regimes is investigated by the technique of partitioning the velocity space. It is found that in a tokamak of moderate elongation, particle and ion heat confinement times are increased by a factor of sigma/sup 2/, where sigma is the ratio of vertical minor radius to horizontal minor ...
openaire +3 more sources
Neoclassical Transport Including Collisional Nonlinearity
Physical Review Letters, 2011 In the standard δf theory of neoclassical transport, the zeroth-order (Maxwellian) solution is obtained analytically via the solution of a nonlinear equation. The first-order correction δf is subsequently computed as the solution of a linear, inhomogeneous equation that includes the linearized Fokker-Planck collision operator.
J, Candy, E A, Belli
openaire +3 more sources
Neoclassical transport optimization of LHD
Nuclear Fusion, 2002 Neoclassical transport is studied for large helical device (LHD) configurations in which the magnetic axis has been shifted radially by determining the mono-energetic transport coefficient and the effective helical ripple. With respect to the transport in the long mean-free-path collisionality region—the so-called 1/ν transport—the optimum ...
Murakami, S. +6 more
openaire +2 more sources
SOLPS-ITER modification for impurity transport modelling in the tokamak pedestal region
Nuclear Materials and EnergyKinetic corrections to SOLPS-ITER fluid equations are made to extend their applicability for description of the neoclassical part of impurity transport to collisionless regimes of the main ions.
V. Korzueva +3 more
doaj +1 more source
Nuclear FusionThe high- Z impurity Tungsten neoclassical particle transport in the tokamak plasmas with the coexisting of the lower- Z impurity is investigated. The lower- Z impurity could reduce or enhance the Tungsten neoclassical particle transport.
Chengkang Pan
doaj +1 more source