Effect of poloidal density variation on parallel viscosity for large Mach numbers

Timo Kiviniemi, Jukka Heikkinen, A. Peeters

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Abstract

Parallel viscosity ⟨B⋅∇⋅Πi⟩ as a function of radial electric field Er (or, equivalently, nonequilibrium poloidal rotation) in a tokamak is studied using a five-dimensional (5D) (3D in configuration space and 2D in velocity space) Monte Carlo particle following code. It is shown that including the poloidal density variation changes the qualitative behavior of the solution causing the parallel viscosity to change sign when the Mach number Mp=|Er/vtBθ| is of the order of unity. Here, vt is the thermal velocity and Bθ is the poloidal magnetic field.
Original languageEnglish
Pages (from-to)5255 - 5258
Number of pages4
JournalPhysics of Plasmas
Volume7
DOIs
Publication statusPublished - 2000
MoE publication typeA1 Journal article-refereed

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Mach number
viscosity
unity
electric fields
configurations
magnetic fields

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Kiviniemi, Timo ; Heikkinen, Jukka ; Peeters, A. / Effect of poloidal density variation on parallel viscosity for large Mach numbers. In: Physics of Plasmas. 2000 ; Vol. 7. pp. 5255 - 5258.
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Effect of poloidal density variation on parallel viscosity for large Mach numbers. / Kiviniemi, Timo; Heikkinen, Jukka; Peeters, A.

In: Physics of Plasmas, Vol. 7, 2000, p. 5255 - 5258.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Effect of poloidal density variation on parallel viscosity for large Mach numbers

AU - Kiviniemi, Timo

AU - Heikkinen, Jukka

AU - Peeters, A.

PY - 2000

Y1 - 2000

N2 - Parallel viscosity ⟨B⋅∇⋅Πi⟩ as a function of radial electric field Er (or, equivalently, nonequilibrium poloidal rotation) in a tokamak is studied using a five-dimensional (5D) (3D in configuration space and 2D in velocity space) Monte Carlo particle following code. It is shown that including the poloidal density variation changes the qualitative behavior of the solution causing the parallel viscosity to change sign when the Mach number Mp=|Er/vtBθ| is of the order of unity. Here, vt is the thermal velocity and Bθ is the poloidal magnetic field.

AB - Parallel viscosity ⟨B⋅∇⋅Πi⟩ as a function of radial electric field Er (or, equivalently, nonequilibrium poloidal rotation) in a tokamak is studied using a five-dimensional (5D) (3D in configuration space and 2D in velocity space) Monte Carlo particle following code. It is shown that including the poloidal density variation changes the qualitative behavior of the solution causing the parallel viscosity to change sign when the Mach number Mp=|Er/vtBθ| is of the order of unity. Here, vt is the thermal velocity and Bθ is the poloidal magnetic field.

U2 - 10.1063/1.1321014

DO - 10.1063/1.1321014

M3 - Article

VL - 7

SP - 5255

EP - 5258

JO - Physics of Plasmas

JF - Physics of Plasmas

SN - 1527-2419

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