Plasma and Fusion Research

Volume 11, 2403035 (2016)

Regular Articles

Three-Dimensional Numerical Analysis of Shear Flow Effects on MHD Stability in LHD Plasmas
Katsuji ICHIGUCHI1,2), Yashiro SUZUKI1,2), Yasushi TODO1,2), Masahiko SATO1), Timothée NICOLAS1), Benjamin A. CARRERAS3), Satoru SAKAKIBARA1,2), Yuki TAKEMURA1), Satoshi OHDACHI1,2) and Yoshiro NARUSHIMA1)
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
SOKENDAI, The Graduate University for Advanced Studies, Toki 509-5292, Japan
Universidad Carlos III, 28911 Leganes, Madrid, Spain
(Received 27 November 2015 / Accepted 25 February 2016 / Published 15 April 2016)


Effects of poloidal shear flow on the stability of interchange modes in a Large Helical Device (LHD) configuration are numerically studied. Three-dimensional (3D) numerical codes are utilized for the equilibrium and stability calculations. A static equilibrium is employed and a model poloidal flow as a flux function is incorporated in the initial perturbation. The results show that the initially applied flow can suppress the growth of the interchange mode if the flow is sufficiently large.


MHD stability, shear flow, 3D numerical simulation, heliotron, interchange mode

DOI: 10.1585/pfr.11.2403035


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