485 citations · 3.4k across the 72 of their papers we have counts for
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Linear and nonlinear stability of a quasi-geostrophic mixing layer subject to a uniform background shear
Luca Biancofiore, Orkan M. Umurhan
The aim of this work is to shed light by revisiting - through the kernel-wave (KW) perspective - the breakdown of a quasi-geostrophic (QG) mixing layer (or vortex strip/filament) i…
On the physical mechanism of centrifugal-gravity wave resonant instability in swirling free surface rotating Polygons
Ron Yellin-Bergovoy, Eyal Heifetz, Orkan M. Umurhan
We present an explicit analysis of wave-resonant instability of swirling flows inside fast rotating cylindrical containers. The linear dynamics are decomposed into the interaction…
Critical layers and protoplanetary disk turbulence
Orkan M. Umurhan, Karim Shariff, Jeffrey N. Cuzzi
A linear analysis of the zombie vortex instability is performed in a stratified shearing sheet setting for three model barotropic shear flows. The linear analysis is done by utiliz…
Interacting vorticity waves as an instability mechanism for MHD shear instabilities
Eyal Heifetz, Julian Mak, Jonas Nycander +1
The interacting vorticity wave formalism for shear flow instabilities is extended here to the magnetohydrodynamic (MHD) setting, to provide a mechanistic description for the stabil…