79 citations · 193 across the 8 of their papers we have counts for
8 papers
Viscous Settling of Bravais Unit-Cells
Sebastian Bürger, Harshit Joshi, S Ganga Prasath +2
We study experimentally and theoretically the Stokesian settling of a well-known class of porous shapes: Bravais lattice unit-cells, whose porosity we vary controllably by changing…
Dynamics and clustering of sedimenting disc lattices
Harshit Joshi, Rahul Chajwa, Sriram Ramaswamy +2
Uniform arrays of particles tend to cluster as they sediment in viscous fluids. Shape anisotropy of the particles enriches these dynamics by modifying the mode-structure and the re…
Hidden Comet-Tails of Marine Snow Impede Ocean-based Carbon Sequestration
Rahul Chajwa, Eliott Flaum, Kay D. Bidle +2
Global carbon-cycle on our planet ties together the living and the non-living world, coupling ecosystem function to our climate. Gravity driven downward flux of carbon in our ocean…
Active Caustics
Rahul Chajwa, Rajarshi, Rama Govindarajan +1
Inertial particles (IPs) in vortical fluid flow cluster strongly, forming singular structures termed caustics for their resemblance to focal surfaces in optics. Here we show that s…
Waves, Algebraic Growth and Clumping in Sedimenting Disk Arrays
Rahul Chajwa, Narayanan Menon, Sriram Ramaswamy +1
An array of spheres descending slowly through a viscous fluid always clumps [J.M. Crowley, J. Fluid Mech. {\bf 45}, 151 (1971)]. We show that anisotropic particle shape qualitative…
Nonmutual torques and the unimportance of motility for long-range order in two-dimensional flocks
Lokrshi Prawar Dadhichi, Jitendra Kethapelli, Rahul Chajwa +2
As the constituent particles of a flock are polar and in a driven state, their interactions must, in general, be fore-aft asymmetric and non-reciprocal. Within a model that explici…
Kepler orbits of settling discs
Rahul Chajwa, Narayanan Menon, Sriram Ramaswamy
The collective dynamics of objects moving through a viscous fluid is complex and counterintuitive. A key to understanding the role of nontrivial particle shape in this complexity i…
Asymmetric exchange in flocks
Lokrshi Prawar Dadhichi, Rahul Chajwa, Ananyo Maitra +1
As the constituents of a flock are polar, one expects a fore-aft asymmetry in their interactions. We show here that the resulting antisymmetric part of the "exchange coupling" betw…