43 citations · 219 across the 20 of their papers we have counts for
9 papers · 1 filter
Energy transfer, Intermittency and Mixing in Shear-Driven Stratified Turbulence
Chandra Shekhar Lohani, Vishwanath Shukla
We investigate a stably stratified flow driven by deterministic Kolmogorov forcing that generates horizontal shear, using direct numerical simulations over a broad range of stratif…
Nonequilibrium Continuous Transition in a Fast Rotating Turbulence
Chandra Shekhar Lohani, Suraj Kumar Nayak, Kannabiran Seshasayanan +1
We study the saturation of three-dimensional unstable perturbations on a fast rotating turbulent flow using direct numerical simulations (DNSs). Under the effect of Kolmogorov forc…
Equivalence of nonequilibrium ensembles: Two-dimensional turbulence with a dual cascade
Kannabiran Seshasayanan, Karthik Subramaniam Eswaran, Maheswar Maji +2
We examine the conjecture of equivalence of nonequilibrium ensembles for turbulent flows in two-dimensions (2D) in a dual-cascade setup. We construct a formally time-reversible Nav…
Inertial Particles in Superfluid Turbulence: Coflow and Counterflow
Sanjay Shukla, Akhilesh Kumar Verma, Vishwanath Shukla +2
We use pseudospectral direct numerical simulations (DNSs) to solve the three-dimensional (3D) Hall-Vinen-Bekharevich-Khalatnikov (HVBK) model of superfluid Helium. We then explore…
The Statistical Properties of Superfluid Turbulence in He from the Hall-Vinen-Bekharevich-Khalatnikov Model
Akhilesh Kumar Verma, Sanjay Shukla, Vishwanath Shukla +2
We obtain the von Kármán-Howarth relation for the stochastically forced three-dimensional Hall-Vinen-Bekharvich-Khalatnikov (3D HVBK) model of superfluid turbulence in Helium (…
Universality and Thermodynamics of Turbulence
Damien Geneste, Hugues Faller, Florian Nguyen +5
We investigate universality of the Eulerian velocity structure functions using velocity fields obtained from the stereoscopic particle image velocimetry (SPIV) technique in experim…
Phase transition in time-reversible Navier-Stokes equations
Vishwanath Shukla, Bérengère Dubrulle, Sergey Nazarenko +2
We present a comprehensive study of the statistical features of a three-dimensional time-reversible Navier-Stokes (RNS) system, wherein the standard viscosity is replaced by a…
Phoresis in turbulent flows
Vishwanath Shukla, Romain Volk, Mickaël Bourgoin +1
Phoresis, the drift of particles induced by scalar gradients in a flow, can result in an effective compressibility, bringing together or repelling particles from each other. Here,…
Homogeneous Isotropic Superfluid Turbulence in Two Dimensions: Inverse and Forward Cascades in the Hall-Vinen-Bekharevich-Khalatnikov model
Vishwanath Shukla, Anupam Gupta, Rahul Pandit
We present the first direct-numerical-simulation study of the statistical properties of two-dimensional superfluid turbulence in the Hall-Vinen-Bekharevich-Khalatnikov two-fluid mo…