New fluid model for the turbulent transport due to the ion temperature gradient

Journal Article · Sat May 01 04:00:00 EDT 1993 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.860891· OSTI ID:6646936

Kim, C ^[1]; Horton, W ^[2]; Hamaguchi, S ^[3]

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1. Department of Physics, Soong Sil University, Seoul (Korea, Republic of)
2. Institute for Fusion Studies, University of Texas at Austin, Austin, Texas 78712 (United States)
3. IBM Thomas J. Watson Research Center, P. O. Box 218, Yorktown Heights, New York 10598 (United States)

A new set of equations appropriate for the study of the turbulence, due to the ion temperature gradient in the slab in the fluid description, is proposed. This model is similar to many existing models including the one used in the work of Hamaguchi and Horton (HH) [S. Hamaguchi and W. Horton, Phys. Fluids B [bold 2], 1834 (1990)]. The main difference is that in this model the ion diamagnetic drift contributes to the kinetic energy in the energy balance relation. It is achieved through more complete analysis for the polarization drift due to the finite-Larmor-radius effects. The linear growth rate in the model is found to be smaller and the numerical results show that the heat transport is smaller by an order of magnitude when compared to HH.

• DOE Contract Number: FG05-80ET53088
• OSTI ID: 6646936
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 5:5; ISSN 0899-8221; ISSN PFBPEI
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700330* -- Plasma Kinetics
Transport
& Impurities-- (1992-)
700340 -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
DAMPING
ION TEMPERATURE
LANDAU DAMPING
LARMOR RADIUS
POLARIZATION
SLABS
TEMPERATURE GRADIENTS
TRANSPORT
TURBULENCE