PARALLEL FLOW VELOCITY SHEAR KELVIN HELMHOLTZ INSTABILITY WITH AC ELECTRIC FIELD

2008 ◽  
Vol 10 ◽  
pp. 21-34
Author(s):  
Rama Shankar Pandey ◽  
Umesh Chandra Srivastava ◽  
Sima Kumari ◽  
Abhay Kumar
Keyword(s):  
Electric Field ◽  
Flow Velocity ◽  
Parallel Flow ◽  
Velocity Shear ◽  
Helmholtz Instability ◽  
Ac Electric Field

scholarly journals Magnetic field generation in a jet-sheath plasma via the kinetic Kelvin-Helmholtz instability

2013 ◽  
Vol 31 (9) ◽  
pp. 1535-1541 ◽  
Author(s):  
K.-I. Nishikawa ◽  
P. Hardee ◽  
B. Zhang ◽  
I. Duţan ◽  
M. Medvedev ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Growth Rate ◽  
Magnetic Fields ◽  
Electric Field ◽  
Flow Direction ◽  
Transverse Magnetic ◽  
Velocity Shear ◽  
Helmholtz Instability ◽  
Magnetic Field Generation ◽  
Relativistic Jet

Abstract. We have investigated the generation of magnetic fields associated with velocity shear between an unmagnetized relativistic jet and an unmagnetized sheath plasma. We have examined the strong magnetic fields generated by kinetic shear (Kelvin–Helmholtz) instabilities. Compared to the previous studies using counter-streaming performed by Alves et al. (2012), the structure of the kinetic Kelvin–Helmholtz instability (KKHI) of our jet-sheath configuration is slightly different, even for the global evolution of the strong transverse magnetic field. In our simulations the major components of growing modes are the electric field Ez, perpendicular to the flow boundary, and the magnetic field By, transverse to the flow direction. After the By component is excited, an induced electric field Ex, parallel to the flow direction, becomes significant. However, other field components remain small. We find that the structure and growth rate of KKHI with mass ratios mi/me = 1836 and mi/me = 20 are similar. In our simulations saturation in the nonlinear stage is not as clear as in counter-streaming cases. The growth rate for a mildly-relativistic jet case (γj = 1.5) is larger than for a relativistic jet case (γj = 15).

VELOCITY SHEAR ION-CYCLOTRON INSTABILITY WITH PERPENDICULAR AC ELECTRIC FIELD

2008 ◽  
Vol 3 ◽  
pp. 177-191 ◽  
Author(s):  
Rama Shankar Pandey ◽  
Umesh Chandra Srivastava ◽  
R. P. Pandey ◽  
B. B. Prasad ◽  
Anonymous Hariom
Keyword(s):  
Electric Field ◽  
Velocity Shear ◽  
Ac Electric Field ◽  
Cyclotron Instability ◽  
Ion Cyclotron

Simulation of TiO 2 particle trajectory in AC electric field

2015 ◽  
Vol 108 ◽  
pp. 183-191 ◽  
Author(s):  
Reza Riahifar ◽  
Babak Raissi ◽  
Cyrus Zamani ◽  
Ehsan Marzbanrad
Keyword(s):  
Electric Field ◽  
Particle Trajectory ◽  
Ac Electric Field

Electrically induced reversible viscosity change in hectorite aqueous dispersion under an AC electric field

2014 ◽  
Vol 99 ◽  
pp. 160-163 ◽  
Author(s):  
Hiroshi Kimura ◽  
Mao Ueno ◽  
Shinya Takahashi ◽  
Akira Tsuchida ◽  
Keiichi Kurosaka
Keyword(s):  
Electric Field ◽  
Aqueous Dispersion ◽  
Viscosity Change ◽  
Ac Electric Field
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