Ion temperature gradient driven turbulence in the weak density gradient limit

Journal Article · Sat Dec 01 00:00:00 EST 1990 · Physics of Fluids B; (USA)

DOI:https://doi.org/10.1063/1.859371· OSTI ID:5773188

Hamaguchi, S; Horton, W ^[1]

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1. Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas (USA)

The anomalous heat transport arising from the ion temperature gradient driven mode or {eta}{sub {ital i}}-mode turbulence is extended to the range of the weak density gradient limit ({eta}{sub {ital i}}={ital L}{sub {ital n}}/{ital L}{sub {ital T}}{r arrow}{infinity}), which is appropriate for H-mode dishcarges. It is shown that the anomalous ion heat conductivity {chi}{sub {ital i}} with {ital L}{sub {ital n}}{r arrow}{infinity} scales as {chi}{sub {ital i}}={ital g}({rho}{sub {ital s}}/{ital L}{sub {ital T}}) ({ital cT}{sub {ital i}}/{ital eB}) exp({minus}{beta}{sigma}) with {sigma}=({ital T}{sub {ital e}}/{ital T}{sub {ital i}}) ({ital L}{sub {ital T}}/{ital L}{sub {ital s}}), {beta}{approx equal}4, and {ital g}{approx equal}1. This {chi}{sub {ital i}} scaling is the natural extension for high {eta}{sub {ital i}} of the scaling of {chi}{sub {ital i}} for {ital K}=({ital T}{sub {ital i}}/{ital T}{sub {ital e}}) (1+{eta}{sub {ital i}}){approx lt}4 obtained (Phys. Fluids B {bold 2}, 1833 (1990)) from analytical and numerical studies.

• DOE Contract Number: FG05-80ET53088
• OSTI ID: 5773188
• Journal Information: Physics of Fluids B; (USA), Vol. 2:12; ISSN 0899-8221
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA
TURBULENCE
ANALYTICAL SOLUTION
ELECTRON DENSITY
FUNCTIONS
HEAT TRANSFER
ION TEMPERATURE
NUMERICAL SOLUTION
PLASMA DENSITY
SCALING LAWS
SHEAR
SIMULATION
TEMPERATURE GRADIENTS
THERMAL CONDUCTIVITY
THREE-DIMENSIONAL CALCULATIONS
ENERGY TRANSFER
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
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