Turbulent mixing and transport of collisionless plasmas across a stratified velocity shear layer

Details Turbulent mixing and transport of collisionless plasmas across a stratified velocity shear layer Turbulent mixing and transport of collisionless plasmas across a stratified velocity shear layer

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006jgra..11105213m&link_type=abstract

Journal of Geophysical Research, Volume 111, Issue A5, CiteID A05213

Physics

Plasma Physics

24

Oceanography: Physical: Turbulence, Diffusion, And Mixing Processes (4490), Magnetospheric Physics: Magnetopause And Boundary Layers, Magnetospheric Physics: Solar Wind/Magnetosphere Interactions, Planetary Sciences: Comets And Small Bodies: Plasma And Mhd Instabilities (2149, 2752, 7836), Space Plasma Physics: Transport Processes

Scientific paper

Two-dimensional simulations of the Kelvin-Helmholtz (K-H) instability in a nonuniform density medium and with the transverse magnetic field show the strong development of turbulence through nonlinear instabilities. Ideal MHD simulation results have indicated that the difference in density between two media plays a crucial role on the fast turbulent mixing and transport. The onset of the turbulence is triggered not only by the secondary K-H instability but also by the Rayleigh-Taylor (R-T) instability at the density interface inside the normal K-H vortex. The secondary R-T instability alters macroscopic structure by transporting dense fluids to tenuous region, while the secondary K-H instability is just a seed for the turbulence. Full particle simulations are also conducted and reproduces the similar result of the ideal MHDs, except that the strong electrostatic field caused by the secondary R-T instability scatters ions and deforms the electron density interface. As a result, the mixing area increases anomalously fast and extends spatially as compared to the result in the uniform density case.

Affiliated with

Also associated with

No associations

Rating

Turbulent mixing and transport of collisionless plasmas across a stratified velocity shear layer does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Turbulent mixing and transport of collisionless plasmas across a stratified velocity shear layer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Turbulent mixing and transport of collisionless plasmas across a stratified velocity shear layer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1008993