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Abstract

Numerical simulations of ion temperature gradient (ITG) mode transport with gyrofluid flux tube codes first lead to the rule that the turbulence is quenched when the critical E X B rotational shear rate exceeds the maximum of ballooning mode growth rates without E X B shear (Waltz, Kerbel, and Milovich, Phys. Plasmas 1, 2229 (1994)). The present work revisits the flux tube simulations reformulated in terms of Floquet ballooning modes which convect in the ballooning mode angle. This new formulation avoids linearly unstable box modes from discretizing in the ballooning angle and illustrates the true nonlinear nature of the stabilization in toroidal geometry.

Additional information

Authors: WALTZ R, General Atomics, San Diego (US);DEWAR R, The Australian National University (AU);GARBET X, CEA, CEN Cadarache, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Article: Physics of Plasmas, Vol. 5 (1998) No. 5, pp. 1784-1792
Record Number: 199810851 / Last updated on: 1998-07-20
Category: PUBLICATION
Original language: en
Available languages: en
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