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(THP2/28) Numerical and Theoretical Studies of Turbulence and Transport with E x B Shear Flows

Z. Lin, M. S. Chance, T. S. Hahm, J. A. Krommes, W. W. Lee, I. Manuilskiy, H. Mynick, H. Qin, G. Rewoldt, W. M. Tang, and R. B. White

Princeton Plasma Physics Laboratory, Princeton University, Princeton, NJ 08543

Abstract.  This paper reports: (1) substantial transport reduction by turbulence-driven E × B flows observed in 3D nonlinear gyrokinetic simulations of microturbulence in magnetically-confined toroidal plasmas; (2) analytical derivation of the effective shearing rate for the time-dependent E × B flow; (3) interpretation of experimental data using linear gyrokinetic microinstability rotation models of E × B shear; and (4) other developments in gyrokinetic theory and simulation.

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