National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

Kinetic-Fluid Model.

DE200316722

Publication Date	2002
Personal Author	Cheng, C. Z.; Johnson, J. R.
Page Count	34
Abstract	A nonlinear kinetic-fluid model for high plasmas with multiple ion species which can be applied to multiscale phenomena is presented. The modelects due to nite ion Larmor radius (FLR), wave-particle resonances, magnetic particle trapping, etc. in the framework of simple fluid descriptions. When further restricting to low frequency phenomena with frequencies less than the ion cyclotron frequency the kinetic-fluid model takes a simpler form in which the fluid equations of multiple ion species collapse into single-fluid density and momentumects are introduced via plasma pressure tensors for ions and electrons which are computed from particle distribution functions that are governed by the Vlasov equation or simplied plasma dynamics equations such as the gyrokinetic equation.
Keywords	Kinetics Fluid mechanics Particle accelerators Alfven waves Plasma dynamics Cyclotron Frequency Distribution functions Electric fields Electrons Trapping Kinetic theory Velocity Boltzman equation
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Princeton Univ., NJ. Plasma Physics Lab.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200319

Kinetic-Fluid Model.

Kinetic-Fluid Model.
DE200316722

Publication Date	2002
Personal Author	Cheng, C. Z.; Johnson, J. R.
Page Count	34
Abstract	A nonlinear kinetic-fluid model for high plasmas with multiple ion species which can be applied to multiscale phenomena is presented. The modelects due to nite ion Larmor radius (FLR), wave-particle resonances, magnetic particle trapping, etc. in the framework of simple fluid descriptions. When further restricting to low frequency phenomena with frequencies less than the ion cyclotron frequency the kinetic-fluid model takes a simpler form in which the fluid equations of multiple ion species collapse into single-fluid density and momentumects are introduced via plasma pressure tensors for ions and electrons which are computed from particle distribution functions that are governed by the Vlasov equation or simplied plasma dynamics equations such as the gyrokinetic equation.
Keywords	Kinetics Fluid mechanics Particle accelerators Alfven waves Plasma dynamics Cyclotron Frequency Distribution functions Electric fields Electrons Trapping Kinetic theory Velocity Boltzman equation
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Princeton Univ., NJ. Plasma Physics Lab.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200319