Nonlinear simulation of resistive ballooning modes in the Large Helical Device | Zendy

Hideaki Miura | Zendy; Takaya Hayashi | Zendy; Tetsuya Sato | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Nonlinear simulation of resistive ballooning modes in the Large Helical Device

Author(s) -

Hideaki Miura,

Takaya Hayashi,

Tetsuya Sato

Publication year - 2001

Publication title -

physics of plasmas

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.75

H-Index - 160

eISSN - 1089-7674

pISSN - 1070-664X

DOI - 10.1063/1.1408624

Subject(s) - physics , ballooning , magnetohydrodynamics , magnetohydrodynamic drive , nonlinear system , large helical device , instability , compressibility , plasma , kink instability , resistive touchscreen , thermal conduction , mechanics , joule heating , excited state , pressure gradient , condensed matter physics , atomic physics , tokamak , thermodynamics , nuclear physics , engineering , quantum mechanics , electrical engineering

Nonlinear simulations of a magnetohydrodynamic (MHD) plasma in full three-dimensional geometry of the Large Helical Device (LHD) [O. Motojima et al., Phys. Plasmas 6, 1843 (1999)] are conducted. A series of simulations shows growth of resistive ballooning instability, for which the growth rate is seen to be proportional to the one-third power of the resistivity. Nonlinear saturation of the excited mode and its slow decay are observed. Distinct ridge/valley structures in the pressure are formed in the course of the nonlinear evolution. The compressibility and the viscous heating, as well as the thermal conduction, are shown to be crucial to suppress the pressure deformations. Indication of a pressure-driven relaxation phenomenon that leads to an equilibrium with broader pressure profile is observed

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research