6 citations · 10 across the 14 of their papers we have counts for
15 papers
Obstacle-aware navigation of smart microswimmers in a turbulent flow
Vaishnavi Gajendragad, Akanksha Gupta, Nadia Bihari Padhan +1
Microswimmers in turbulent flows often navigate complex, heterogeneous, and obstacle-rich environments, where they exhibit intricate behaviors such as trapping at and escape from o…
Non-reciprocal Binary-fluid Turbulence
Biswajit Maji, Nadia Bihari Padhan, Axel Voigt +1
Although effective non-reciprocal interactions have been investigated in a variety of fields, their consequences have not been explored in hydrodynamical turbulence. We initiate su…
Vortex triplets, symmetry breaking, and emergent nonequilibrium plastic crystals in an active-spinner fluid
Biswajit Maji, Nadia Bihari Padhan, Rahul Pandit
The formation of patterns and exotic nonequilibrium steady states in active-fluid systems continues to pose challenging problems -- theoretical, numerical, and experimental -- for…
Hyperuniformity in ternary fluid mixtures: the role of wetting and hydrodynamics
Nadia Bihari Padhan, Axel Voigt
Phase separation in multicomponent fluids is central to understanding the organization of complex materials and biological structures. The Cahn-Hilliard-Navier-Stokes (CHNS) equati…
The Cahn-Hilliard-Navier-Stokes Framework for Multiphase Fluid Flows: Laminar, Turbulent, and Active
Nadia Bihari Padhan, Rahul Pandit
The Cahn-Hilliard-Navier-Stokes (CHNS) partial differential equations (PDEs) provide a powerful framework for the study of the statistical mechanics and fluid dynamics of multiphas…
Emergent turbulence and coarsening arrest in active-spinner fluids
Biswajit Maji, Nadia Bihari Padhan, Rahul Pandit
We uncover activity-driven crossover from phase separation to a new turbulent state in a two-dimensional system of counter-rotating spinners. We study the statistical properties of…
First observation of turbulence-like state in dense algal suspensions
Prince Vibek Baruah, Nadia Bihari Padhan, Biswajit Maji +2
Active turbulence arises typically in systems ranging from microorganisms and biopolymers to synthetic colloids, where chaotic flows are closely associated with motile topological…
Suppression of hyperuniformity in hydrodynamic scalar active field theories
Nadia Bihari Padhan, Axel Voigt
The coarsening dynamics at late times in phase-separating systems lead to universally hyperuniform patterns. This is well known for scalar field theories, such as the Cahn-Hilliard…
Liquid-Droplet Coalescence: CNN-based Reconstruction of Flow Fields from Concentration Fields
Vasanth Kumar Babu, Nadia Bihari Padhan, Rahul Pandit
Liquid-droplet coalescence and the mergers of liquid lenses are problems of great practical and theoretical interest in fluid dynamics and the statistical mechanics of multi-phase…
Interface-induced turbulence in viscous binary fluid mixtures
Nadia Bihari Padhan, Dario Vincenzi, Rahul Pandit
We demonstrate the existence of interface-induced turbulence, an emergent nonequilibrium statistically steady state (NESS) with spatiotemporal chaos, which is induced by interfacia…
Novel turbulence and coarsening arrest in active-scalar fluids
Nadia Bihari Padhan, Kolluru Venkata Kiran, Rahul Pandit
We uncover a new type of turbulence -- activity-induced homogeneous and isotropic turbulence in a model that has been employed to investigate motility-induced phase separation (MIP…
Unveiling the Spatiotemporal Evolution of Liquid-Lens Coalescence: Self-Similarity, Vortex Quadrupoles, and Turbulence in a Three-Phase Fluid System
Nadia Bihari Padhan, Rahul Pandit
We demonstrate that the three-phase Cahn-Hilliard-Navier-Stokes (CHNS3) system provides a natural theoretical framework for studying liquid-lens coalescence, which has been investi…
Activity-induced droplet propulsion and multifractality
Nadia Bihari Padhan, Rahul Pandit
We develop a minimal hydrodynamic model, without an orientational order parameter, for assemblies of contractile swimmers encapsulated in a droplet of a binary-fluid emulsion. Our…
An analytical and computational study of the incompressible Toner-Tu Equations
John. D. Gibbon, Kolluru Venkata Kiran, Nadia Bihari Padhan +1
The incompressible Toner-Tu (ITT) partial differential equations (PDEs) are an important example of a set of active-fluid PDEs. While they share certain properties with the Navier-…
Direct Numerical Simulations of Three-dimensional Magnetohydrodynamic Turbulence with Random, Power-law Forcing
Ganapati Sahoo, Nadia Bihari Padhan, Abhik Basu +1
We present pseudospectral direct-numerical-simulation (DNS) studies of the three-dimensional magnetohydrodynamic (MHD) equations (3DRFMHD) with a stochastic force that has zero mea…