57 citations · 362 across the 17 of their papers we have counts for
6 papers · 1 filter
Discontinuous transition from direct to inverse cascade in three-dimensional turbulence
Ganapati Sahoo, Alexandros Alexakis, Luca Biferale
Inviscid invariants of flow equations are crucial in determining the direction of the turbulent energy cascade. In this work we investigate a variant of the three dimensional Navie…
Role of helicity for large- and small-scale turbulent fluctuations
Ganapati Sahoo, Fabio Bonaccorso, Luca Biferale
The effect of the helicity on the dynamics of the turbulent flows is investigated. The aim is to disentangle the role of helicity in fixing the direction, the intensity and the flu…
Multiscaling in Hall-Magnetohydrodynamic Turbulence: Insights from a Shell Model
Debarghya Banerjee, Samriddhi Sankar Ray, Ganapati Sahoo +1
We show that a shell-model version of the three-dimensional Hall-magnetohydrodynamic (3D Hall-MHD) equations provides a natural theoretical model for investigating the multiscaling…
Real-space Manifestations of Bottlenecks in Turbulence Spectra
Uriel Frisch, Samriddhi Sankar Ray, Ganapati Sahoo +2
An energy-spectrum bottleneck, a bump in the turbulence spectrum between the inertial and dissipation ranges, is shown to occur in the non-turbulent, one-dimensional, hyperviscous…
Systematics of the magnetic-Prandtl-number dependence of homogeneous, isotropic magnetohydrodynamic turbulence
Ganapati Sahoo, Prasad Perlekar, Rahul Pandit
We present the results of our detailed pseudospectral direct numerical simulation (DNS) studies, with up to collocation points, of incompressible, magnetohydrodynamic (MHD…
Dynamo Onset as a First-Order Transition: Lessons from a Shell Model for Magnetohydrodynamics
Ganapati Sahoo, Dhrubaditya Mitra, Rahul Pandit
We carry out systematic and high-resolution studies of dynamo action in a shell model for magnetohydrodynamic (MHD) turbulence over wide ranges of the magnetic Prandtl number $Pr_{…