Fluid model treatment of surface plasma structures
- Idaho National Engineering Laboratory, EG G Idaho, P. O. Box 1625, Idaho Falls, Idaho 83415-3123 (United States)
- University of Arizona, Tucson, Arizona 85721 (United States)
A fluid model is presented for the purpose of calculating numerically the structures of surface plasmas with neutrals returning from the surface, in collision-dominated parameter regimes. Limiting corrections to thermal conduction and viscous pressure are obtained through comparisons with previous Fokker--Planck transport calculations. The model includes removal by pumping, as well as by ionization, of some of the returning neutrals, and solutions are obtained for different relative strengths of pumping. Increasing velocities of plasma flow toward the surface and increasing plasma temperatures near the surface are seen with increased pumping. In the asymptotic region, far from the surface, agreement is found between these families of numerical model solutions and two classes of analytic solutions. Applications to other fundamental and applied problems are discussed.
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 7205658
- Journal Information:
- Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 4:4; ISSN 0899-8221; ISSN PFBPE
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
700330* -- Plasma Kinetics
Transport
& Impurities-- (1992-)
700370 -- Plasma Fluid & MHD Properties-- (1992-)
ANALYTICAL SOLUTION
COLLISIONAL PLASMA
DIFFERENTIAL EQUATIONS
ENERGY TRANSFER
EQUATIONS
FOKKER-PLANCK EQUATION
HEAT TRANSFER
IONIZATION
KINETIC EQUATIONS
NUMERICAL SOLUTION
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA
PLASMA SHEATH
PUMPING
SURFACES
THERMAL CONDUCTION
TRANSPORT THEORY