Kinetic simulation of the Kelvin-Helmholtz instability in a finite sized jet

Details Kinetic simulation of the Kelvin-Helmholtz instability in a finite sized jet Kinetic simulation of the Kelvin-Helmholtz instability in a finite sized jet

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995jgr...10012011t&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 100, no. A7, p. 12,011-12,016

Physics

4

Kelvin-Helmholtz Instability, Kinetics, Plasma Jets, Two Dimensional Models, Magnetic Fields, Magnetopause

Scientific paper

Two-dimensional hybrid simulations with particle ions and fluid electrons are used to calculate the kinetic evolution of the Kelvin-Helmholtz (K-H) instability for a jet of material moving transverse to the magnetic field in the middle of a field reversal region. The instability shows two phases. This first phase is the development of a short scale length instability on the sides of the jet, which might be characterized as a local K-H instability. This instability saturates at low amplitude by modest broadening of the jet profile. Then a nonlocal K-H instability sets in where the jet exhibits a kinklike behavior which spreads and disrupts the jet in a dramatic fashion. The simulation results are discussed within the context of possible relevance to the magnetopause.

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