Up-down symmetry of the turbulent transport of toroidal angular momentum in tokamaks

Up-down symmetry of the turbulent transport of toroidal angular momentum in tokamaks

Up-down symmetry of the turbulent transport of toroidal angular momentum in tokamaks 150 150 UKAEA Opendata

Up-down symmetry of the turbulent transport of toroidal angular momentum in tokamaks

Two symmetries of the local nonlinear df 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.

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10/06/2011