11 citations · 37 across the 10 of their papers we have counts for
10 papers
Constraining the radial decay timescale of solar surface magnetic field through a comparative study of data-assimilative 2D surface flux transport and 3D dynamo models
Soumyadeep Chatterjee, Gopal Hazra
The polar magnetic field is the most reliable precursor for predicting the amplitude of the solar cycle, and the 2D surface flux transport (SFT) model is widely used to reconstruct…
Probing the large-scale magnetic field inside the Sun from three decades of observed surface magnetograms
Soumyadeep Chatterjee, Gopal Hazra
Space-weather and disturbances in the heliosphere are manifestations of the solar magnetic field, which is solely driven by the interior dynamo, and constraining the solar interior…
Equilibrium and nonequilibrium properties of Euler turbulence
Mahendra K. Verma, Soumyadeep Chatterjee
In this article, we report the equilibrium and nonequilibrium features of two-dimensional (2D) and three-dimensional (3D) Euler turbulence. To obtain a full range of equilibrium sp…
Turbulent Drag Reduction in Magnetohydrodynamic Turbulence and Dynamo from Energy Flux Perspectives
Mahendra K. Verma, Manohar K. Sharma, Soumyadeep Chatterjee
In this review, we describe turbulent drag reduction in a variety of flows using a universal framework of energy flux. In a turbulent flow with dilute polymers and magnetic field,…
Hydrodynamic Entropy and Emergence of Order in Two-dimensional Euler Turbulence
Mahendra K. Verma, Soumyadeep Chatterjee
Using numerical simulations, we show that the asymptotic states of two-dimensional (2D) Euler turbulence exhibit large-scale flow structures due to nonzero energy transfers among s…
Equilibrium states of Burgers and KdV equations
Mahendra K. Verma, Soumyadeep Chatterjee, Aryan Sharma +1
We simulate KdV and dissipation-less Burgers equations using delta-correlated random noise as initial condition. We observe that the energy fluxes of the two equations remain zero…
Scalable Multi-node Fast Fourier Transform on GPUs
Manthan Verma, Soumyadeep Chatterjee, Gaurav Garg +5
In this paper, we present the details of our multi-node GPU-FFT library, as well its scaling on Selene HPC system. Our library employs slab decomposition for data division and MPI…
Kolmogorov flow: Linear Stability and Energy Transfers in a minimal low-dimensional model
Soumyadeep Chatterjee, Mahendra K. Verma
In this paper, we derive a four-mode model for the Kolmogorov flow by employing Galerkin truncation and Craya-Herring basis for the decomposition of velocity field. After this, we…
Euler Turbulence and thermodynamic equilibrium
Mahendra K. Verma, Shashwat Bhattacharya, Soumyadeep Chatterjee
We perform a unique direct numerical simulation of Euler turbulence using delta-correlated velocity field as an initial condition, and report a full range of and energy s…
Turbulent drag reduction in magnetohydrodynamic and quasi-static magnetohydrodynamic turbulence
Mahendra K. Verma, Shadab Alam, Soumyadeep Chatterjee
In hydrodynamic turbulence, the kinetic energy injected at large scales cascades to the inertial range, leading to a constant kinetic energy flux. In contrast, in magnetohydrodynam…