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Chiral Edge Modes in Helmholtz-Onsager Vortex Systems
Vishal P. Patil, Jörn Dunkel
Vortices play a fundamental role in the physics of two-dimensional (2D) fluids across a range of length scales, from quantum superfluids to geophysical flows. Despite a history dat…
Linearly forced fluid flow on a rotating sphere
Rohit Supekar, Vili Heinonen, Keaton J. Burns +1
We investigate generalized Navier-Stokes (GNS) equations that couple nonlinear advection with a generic linear instability. This analytically tractable minimal model for fluid flow…
Anomalous chained turbulence in actively driven flows on spheres
Oscar Mickelin, Jonasz Słomka, Keaton J. Burns +4
Recent experiments demonstrate the importance of substrate curvature for actively forced fluid dynamics. Yet, the covariant formulation and analysis of continuum models for non-equ…
The nature of triad interactions in active turbulence
Jonasz Słomka, Piotr Suwara, Jörn Dunkel
Generalized Navier-Stokes (GNS) equations describing three-dimensional (3D) active fluids with flow-dependent spectral forcing have been shown to possess numerical solutions that c…
Spontaneous mirror-symmetry breaking induces inverse energy cascade in 3D active fluids
Jonasz Słomka, Jörn Dunkel
Classical turbulence theory assumes that energy transport in a 3D turbulent flow proceeds through a Richardson cascade whereby larger vortices successively decay into smaller ones.…