73 citations · 179 across the 9 of their papers we have counts for
9 papers
Coexistence of defect morphologies in three dimensional active nematics
Pasquale Digregorio, Cecilia Rorai, Ignacio Pagonabarraga +1
We establish how active stress globally affects the morphology of disclination lines of a three dimensional active nematic liquid crystal under chaotic flow. Thanks to a defect det…
Coexistence of active and hydrodynamic turbulence in two dimensional active nematics
C. Rorai, F. Toschi, I. Pagonabarraga
In active nematic liquid crystals activity is able to drive chaotic spatiotemporal flows referred to as active turbulence. Active turbulence has been characterized through theoreti…
Active nematic flows confined in a two dimensional channel with hybrid alignment at the walls: a unified picture
C. Rorai, F. Toschi, I. Pagonabarraga
Active nematic fluids confined in narrow channels generate spontaneous flows when the activity is sufficiently intense. Recently, it was shown that if the molecular anchoring at th…
On the limitations of some popular numerical models of flagellated microswimmers: importance of long-range forces and flagellum waveform
C. Rorai, M. Zaitsev, S. Karabasov
For a sperm cell-like flagellated swimmer in an unbounded domain, several numerical models of different fidelity are considered based on the Stokes flow approximation. The models i…
Stably stratified turbulence in the presence of large-scale forcing
C. Rorai, P. D. Mininni, A. Pouquet
We perform two high resolution direct numerical simulations of stratified turbulence for Reynolds number equal to Re~25000 and Froude number respectively of Fr~0.1 and Fr~0.03. The…
Motion of an elastic capsule in a constricted microchannel
Cecilia Rorai, Antoine Touchard, Lailai Zhu +1
We study the motion of an elastic capsule through a microchannel characterized by a localized constriction. We consider a capsule with a stress-free spherical shape and impose its…
A microfluidic device to sort capsules by deformability: A numerical study
Lailai Zhu, Cecilia Rorai, Dhrubaditya Mitra +1
Guided by extensive numerical simulations, we propose a microfluidic device that can sort elastic capsules by their deformability. The device consists of a duct embedded with a sem…
Turbulence comes in bursts in stably stratified flows
C. Rorai, P. D. Mininni, A. Pouquet
There is a clear distinction between simple laminar and complex turbulent fluids. But in some cases, as for the nocturnal planetary boundary layer, a stable and well-ordered flow c…
Propagating and annihilating vortex dipoles in the Gross-Pitaevskii equation
Cecilia Rorai, K. R. Sreenivasan, Michael E. Fisher
Quantum vortex dynamics in Bose-Einstein condensates or superfluid helium can be informatively described by the Gross-Pitaevskii (GP) equation. Various approximate analytical formu…