76 citations · 274 across the 22 of their papers we have counts for
15 papers · 1 filter
Laminar gaps mirror turbulent puffs in pipe flow
Shai Kapon, Tobias Grafke, Anna Frishman
Pipe flow at intermediate Reynolds numbers, between the laminar and fully turbulent regimes, takes the form of several spatially and temporally intermittent phases in which turbule…
Conservation laws, fluxes, and symmetries: lessons from a perturbative approach for self-organized turbulence
Anna Frishman, Sébastien Gomé, Anton Svirsky
Some turbulent flows self-organize into large-scale structures, rather than breaking up into ever-smaller scales. Underpinning this phenomenon is the existence of two sign-definite…
Helicity controls the direction of fluxes in rotating turbulence
Sébastien Gomé, Anna Frishman
Turbulence sustains out-of-equilibrium energy fluxes shaped by conservation laws. Three-dimensional flows conserve energy and sign-indefinite helicity, both being transferred to sm…
Waves maintain large-scale 2D flows in rotating turbulence and cause their demise
Sébastien Gomé, Anna Frishman
Turbulence follows a few well-known organizational principles, rooted in conservation laws. One such principle states that a system conserving two sign-definite invariants self-org…
Self-Replication of Turbulent Puffs: On the edge between chaotic saddles
Anton Svirsky, Tobias Grafke, Anna Frishman
Pipe flow is a canonical example where turbulence first appears intermittently in space and time, taking the form of localized structures termed puffs. Turbulence spreads via puff…
Out-of-equilibrium fluxes shape the self-organization of locally-interacting turbulence
Anton Svirsky, Anna Frishman
We study the self-organization of turbulence in a geophysically motivated two-dimensional fluid with local interactions. Using simulations and theory, we show that the out-of-equil…
Statistics of inhomogeneous turbulence in large scale quasi-geostrophic dynamics
Anton Svirsky, Corentin Herbert, Anna Frishman
A remarkable feature of two-dimensional turbulence is the transfer of energy from small to large scales. This process can result in the self-organization of the flow into large, co…
Universality of satellites in the breakup of a stretched fluid bridge
Anna Frishman, Daniel Lecoanet
As a fluid object breaks, it often leaves behind satellite fragments. Here we show that satellite formation can follow universal dynamics, leading to robust satellite sizes. Specif…
Two-dimensional turbulence with local interactions: statistics of the condensate
Anton Svirsky, Corentin Herbert, Anna Frishman
Two-dimensional turbulence self-organizes through a process of energy accumulation at large scales, forming a coherent flow termed a condensate. We study the condensate in a model…
Mechanism for turbulence proliferation in subcritical flows
Anna Frishman, Tobias Grafke
The subcritical transition to turbulence, as occurs in pipe flow, is believed to generically be a phase transition in the directed percolation universality class. At its heart is a…
Dynamical landscape of transitional pipe flow
Anna Frishman, Tobias Grafke
The transition to turbulence in pipes is characterized by a coexistence of laminar and turbulent states. At the lower end of the transition, localized turbulent pulses, called puff…
Perspectives on viscoelastic flow instabilities and elastic turbulence
Sujit S. Datta, Arezoo M. Ardekani, Paulo E. Arratia +20
Viscoelastic fluids are a common subclass of rheologically complex materials that are encountered in diverse fields from biology to polymer processing. Often the flows of viscoelas…
Turbulence statistics in a 2D vortex condensate
Anna Frishman, Corentin Herbert
Disentangling the evolution of a coherent mean-flow and turbulent fluctuations, interacting through the non-linearity of the Navier-Stokes equations, is a central issue in fluid me…
The culmination of an inverse cascade: mean flow and fluctuations
Anna Frishman
Two dimensional turbulence has a remarkable tendency to self-organize into large, coherent structures, forming a mean flow. The purpose of this paper is to elucidate how these stru…
Time-irreversibility of the statistics of a single particle in a compressible turbulence
Tobias Grafke, Anna Frishman, Gregory Falkovich
We investigate time-irreversibility from the point of view of a single particle in Burgers turbulence. Inspired by the recent work for incompressible flows [Xu et al., PNAS 111.21…