Sheared-flow Modes in Toroidal Geometry | Zendy

J.L.V. Lewandowski | Zendy; T.S. Hahm | Zendy; W.W. Lee | Zendy; Zhihong Lin | Zendy

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Sheared-flow Modes in Toroidal Geometry

Author(s) -

J.L.V. Lewandowski,

T.S. Hahm,

W.W. Lee,

Zhihong Lin

Publication year - 1999

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/14405

Subject(s) - toroid , physics , adiabatic process , turbulence , classical mechanics , poisson's equation , toroidal and poloidal , flow (mathematics) , bessel function , geometry , electron , magnetic field , mechanics , plasma , quantum mechanics , mathematics

Using a Fourier-Bessel representation for the fluctuating (turbulent) electrostatic potential, an equation governing the sheared-flow modes in toroidal geometry is derived from the gyrokinetic Poisson equation, where both the adiabatic and non-adiabatic responses of the electrons are taken into account. It is shown that the principal geometrical effect on sheared-flow modes of the electrostatic potential is due to the flux-surface average of 1/B, where B is the magnetic field strength

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