153 citations · 1.1k across the 29 of their papers we have counts for
6 papers · 1 filter
Hydrodynamic stability and mode coupling in Keplerian flows: local strato-rotational analysis
A. G. Tevzadze, G. D. Chagelishvili, J. -P. Zahn
Aims. Qualitative analysis of key (but yet unappreciated) linear phenomena in stratified hydrodynamic Keplerian flows: (i) the occurrence of a vortex mode, as a consequence of stra…
Stability and nonlinear adjustment of vortices in Keplerian flows
G. Bodo, A. Tevzadze, G. Chagelishvili +3
We investigate the stability, nonlinear development and equilibrium structure of vortices in a background shearing Keplerian flow. We make use of high-resolution global two-dimensi…
Comments on ``An Exact, Three-Dimensional, Time-Dependent Wave Solution in Local Keplerian Flow'' by Balbus and Hawley (astro-ph/0608429)
G. D. Chagelishvili, A. G. Tevzadze
We analyze the scepticism on the hydrodynamic turbulence in Keplerian astrophysical disks expressed in Balbus and Hawley 2006 and show the failure of arguments of the paper.
Spiral density wave generation by vortices in Keplerian flows
G. Bodo, G. Chagelishvili, G. Murante +3
We perform a detailed analytical and numerical study of the dynamics of perturbations (vortex/aperiodic mode, Rossby and spiral-density waves) in 2D compressible disks with a Keple…
On hydrodynamic shear turbulence in Keplerian disks: via transient growth to bypass transition
G. D. Chagelishvili, J. -P. Zahn, A. G. Tevzadze +1
This paper deals with the problem of hydrodynamic shear turbulence in non-magnetized Keplerian disks. We wish to draw attention to a route to hydrodynamic turbulence which seems to…
Linear dynamics of the solar convection zone: excitation of waves in unstably stratified shear flows
G. D. Chagelishvili, A. G. Tevzadze, M. Goossens
In this paper we report on the nonresonant conversion of convectively unstable linear gravity modes into acoustic oscillation modes in shear flows. The convectively unstable linear…