Bibliographic Citation
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DOI | http://dx.doi.org/10.1063/1.871955 |
Title | Stationary turbulent spectra of toroidal{eta}{sub{ital i}} mode |
Creator/Author | Pakyari, A. ; Pavlenko, V.P. [Department of Technology, EURATOM-NFR Fusion Association, Uppsala University, P.O. Box 534, S-751 21 Uppsala (Sweden)] |
Publication Date | 1996 Oct 01 |
OSTI Identifier | OSTI ID: 383781 |
Other Number(s) | PHPAEN; ISSN 1070-664X |
Resource Type | Journal Article |
Resource Relation | Physics of Plasmas ; VOL. 3 ; ISSUE: 10 ; PBD: Oct 1996 |
Subject | 70 PLASMA PHYSICS AND FUSION ; DRIFT INSTABILITY; TURBULENCE; TOKAMAK DEVICES; ENERGY SPECTRA; KINETIC EQUATIONS; MONTE CARLO METHOD; RANDOM PHASE APPROXIMATION; DIAMAGNETISM |
Related Subject | POWER SPECTRA |
Description/Abstract | Toroidal ion temperature gradient (ITG) driven drift mode turbulence has been analyzed analyti- cally and numerically. By using weak nonlinearity arguments and random phase approxima- tion, dynamic and wave kinetic equations are derived. Three different nonlinearities, namely{bold E{times}B}, convective, and diamagnetic nonlinearities, play important roles in the turbulent spectral transfer. The power spectra of the weak ITG-mode turbulence are obtained analytically for{vert_bar}{bold k}{vert_bar}{gt}1 and{vert_bar}{bold k}{vert_bar}{lt}1 ranges in the wave number space. Forward energy cascading due to convective and diamagnetic nonlinearities will balance the inverse energy cascading due to{bold E{times}B} nonlinearity at{vert_bar}{bold k}{vert_bar}{approx_equal}1/{rho}{sub{ital s}} ({bold k} is the wave number,{rho}{sub{ital s}}={ital c}{sub{ital s}}/{omega}{sub{ital ci}}, where{ital c}{sub{ital s}} is the sound velocity and{omega}{sub{ital ci}} is the ion cyclotron frequency) and results in energy condensation at{vert_bar}{bold k}{vert_bar}{approx_equal}1/{rho}{sub{ital s}}.{copyright}{ital 1996 American Institute of Physics.} |
Country of Publication | United States |
Language | English |
Format | pp. 3628-3635 ; PL: |
System Entry Date | 2001 May 05 |
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