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Turbulent Transport Reduction by Zonal Flows [electronic resource] : Massively Parallel Simulations

Published
Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 1998.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
4p pages : digital, PDF file
Additional Creators
Princeton University, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The dynamics of turbulence-driven E x B zonal flows has been systematically studied in fully 3-dimensional gyrokinetic simulations of microturbulence in magnetically confined toroidal plasmas using recently available massively parallel computers. Linear flow damping simulations exhibit an asymptotic residual flow in agreement with recent analytic calculations. Nonlinear global simulations of instabilities driven by temperature gradients in the ion component of the plasma provide key first principles results supporting the physics picture that turbulence-driven fluctuating E x B zonal flows can significantly reduce turbulent transport.
Report Numbers
E 1.99:pppl--3302
pppl--3302
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
06/01/1998.
"pppl--3302"
"DE98057838"
White, R.B.; Lee, W.W.; Hahm, T.S.; Lin, Z.; Tang, W.M.
Funding Information
AC02-76CH03073
View MARC record | catkey: 14740762