Amal Roy
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Amal Roy has a total of 5 co-authors. Here are the top co-authors by number of shared publications:
- Anupam Gupta
Department of Physics, Indian Institute of Technology Hyderabad, Hyderabad 502284, India
3 shared publications - Samriddhi Sankar Ray
International Centre for Theoretical Sciences, Tata Institute of Fundamental Research
3 shared publications - Arnab Saha
University of Calcutta
2 shared publications - Chandramani Singh
Department of Electronic Systems Engineering (DESE), Indian Institute of Science (IISc), Bangalore, Karnataka, India
1 shared publication - Yadati Narahari
Indian Institute of Science, Bangalore, India
1 shared publication
Latest Publications
- 27 September 2023
- Published by Springer Nature in Sādhanā
- Vol. 48 (4) , 1-20
Recent advances in modeling and control of epidemics using a mean field approach
- 27 September 2023
- Published by Springer Nature in Sādhanā
- Vol. 48 (4) , 1-20
Recent advances in modeling and control of epidemics using a mean field approach
- 15 May 2020
- Published by American Physical Society (APS) in Physical Review Fluids
- Vol. 5 (5) , 052601
Flocking of active particles in a turbulent flow
We investigate the effect of cooperative interactions in an ensemble of microorganisms, modeled as self-propelled disklike and rodlike particles, in a three-dimensional turbulent flow and show flocking and nematic ordering as an emergent phenomenon. Building on the work by Choudhary et al. [ Europhys. Lett. 112, 24005 (2015)] for two-dimensional systems, and combining ideas from active matter and turbulent transport, we show that nontrivial correlations between the flow and individual dynamics are essential for the microorganisms to flock in, for example, a turbulent three-dimensional marine environment. Our results may have implications especially in the modeling of artificial microswimmers in a hostile environment.
- 15 May 2020
- Published by American Physical Society (APS) in Physical Review Fluids
- Vol. 5 (5) , 052601
Flocking of active particles in a turbulent flow
We investigate the effect of cooperative interactions in an ensemble of microorganisms, modeled as self-propelled disklike and rodlike particles, in a three-dimensional turbulent flow and show flocking and nematic ordering as an emergent phenomenon. Building on the work by Choudhary et al. [ Europhys. Lett. 112, 24005 (2015)] for two-dimensional systems, and combining ideas from active matter and turbulent transport, we show that nontrivial correlations between the flow and individual dynamics are essential for the microorganisms to flock in, for example, a turbulent three-dimensional marine environment. Our results may have implications especially in the modeling of artificial microswimmers in a hostile environment.
- Open Access
Flocking of Active Particles in a Turbulent Flow
We investigate the effect of cooperative interactions in an ensemble of microorganisms, modelled as self-propelled disk-like and rod-like particles, in a three-dimensional turbulent flow to show flocking as an emergent phenomenon. Building on the work by Choudhary, et al. [Europhys. Lett. 112, 24005 (2015)] for two-dimensional systems, and combining ideas from active matter and turbulent transport, we show that non-trivial correlations between the flow and individual dynamics are essential for the microorganisms to flock in, for example, a turbulent three-dimensional, marine environment. Our results may have implications especially in the modelling of artificial microswimmers in a hostile environment.
Open AccessFlocking of Active Particles in a Turbulent Flow
We investigate the effect of cooperative interactions in an ensemble of microorganisms, modelled as self-propelled disk-like and rod-like particles, in a three-dimensional turbulent flow to show flocking as an emergent phenomenon. Building on the work by Choudhary, et al. [Europhys. Lett. 112, 24005 (2015)] for two-dimensional systems, and combining ideas from active matter and turbulent transport, we show that non-trivial correlations between the flow and individual dynamics are essential for the microorganisms to flock in, for example, a turbulent three-dimensional, marine environment. Our results may have implications especially in the modelling of artificial microswimmers in a hostile environment.
- 3 August 2018
- Published by American Physical Society (APS) in Physical Review E
- Vol. 98 (2) , 021101
Inertial spheroids in homogeneous, isotropic turbulence
We study the rotational dynamics of inertial disks and rods in three-dimensional, homogeneous, isotropic turbulence. In particular, we show how the alignment and the decorrelation timescales of such spheroids depend, critically, on both the level of inertia and the aspect ratio of these particles. These results illustrate the effect of inertia—which leads to a preferential sampling of the local flow geometry—on the statistics of both disks and rods in a turbulent flow. Our results are important for a variety of natural and industrial settings where the turbulent transport of asymmetric, spheroidal inertial particles is ubiquitous.
- 3 August 2018
- Published by American Physical Society (APS) in Physical Review E
- Vol. 98 (2) , 021101
Inertial spheroids in homogeneous, isotropic turbulence
We study the rotational dynamics of inertial disks and rods in three-dimensional, homogeneous, isotropic turbulence. In particular, we show how the alignment and the decorrelation timescales of such spheroids depend, critically, on both the level of inertia and the aspect ratio of these particles. These results illustrate the effect of inertia—which leads to a preferential sampling of the local flow geometry—on the statistics of both disks and rods in a turbulent flow. Our results are important for a variety of natural and industrial settings where the turbulent transport of asymmetric, spheroidal inertial particles is ubiquitous.