46 citations · 211 across the 12 of their papers we have counts for
12 papers
Aerodynamic sound of turbulent time-developing shear layer as the outcome of the flow linear non-modal instability
George Khujadze, David Gogichaishvili, George Chagelishvili +3
The aim of this paper is to substantiate the importance of non-normality of shear flow linear operators and its consequence -- the non-modal dynamics of the perturbations -- in the…
Zero net flux MRI-turbulence in disks sustenance scheme and magnetic Prandtl number dependence
George Mamatsashvili, George Chagelishvili, Martin E. Pessah +2
We investigate sustenance and dependence on magnetic Prandtl number () for magnetorotational instability (MRI)-driven turbulence in astrophysical Keplerian disks with zer…
Active modes and dynamical balances in MRI-turbulence of Keplerian disks with a net vertical magnetic field
D. Gogichaishvili, G. Mamatsashvili, W. Horton +1
We studied dynamical balances in magnetorotational instability (MRI) turbulence with a net vertical field in the shearing box model of disks. Analyzing the turbulence dynamics in F…
Nonlinear transverse cascade and sustenance of MRI-turbulence in Keplerian disks with an azimuthal magnetic field
D. Gogichaishvili, G. Mamatsashvili, W. Horton +2
We investigate magnetohydrodynamic turbulence driven by the magnetorotational instability (MRI) in Keplerian disks with a nonzero net azimuthal magnetic field using shearing box si…
Nonlinear transverse cascade and two-dimensional magnetohydrodynamic subcritical turbulence in plane shear flows
G. R. Mamatsashvili, D. Z. Gogichaishvili, G. D. Chagelishvili +1
We find and investigate via numerical simulations self-sustained two-dimensional turbulence in a magnetohydrodynamic flow with a maximally simple configuration: plane, noninflectio…
Nature and dynamics of overreflection of Alfven waves in MHD shear flows
D. Gogichaishvili, G. Chagelishvili, R. Chanishvili +1
Our goal is to gain new insights into the physics of wave overreflection phenomenon in MHD nonuniform/shear flows changing the existing trend/approach of the phenomenon study. The…