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turbulenceteam | Visualization of a large-scale vortex dipole in 2D active nematic turbulence @turbulenceteamms | Uploaded 3 years ago | Updated 3 hours ago
Advective inertia is responsible for large-scale flow patterns, which, on sufficiently large domains, become visible as meta-stable condensates. Here, two opposing large-scale vortices form, similar to the ones in classical 2D turbulence. The chaotic motion of small vortex dipoles caused by topological defects in the orientation destabilizes the pattern. The visualization is obtained from a direct numerical simulation of the equations of motion with self-advection of the fluid flow.

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Visualization of a large-scale vortex dipole in 2D active nematic turbulenceTurbulent Rayleigh-Bénard Convection in a CylinderActive vortex array in the marginal stability regionTemperature and Vertical Velocity in Turbulent Rayleigh-Bénard ConvectionEmergence of an active vortex crystalActive turbulence3D Kolmogorov flowTwo views of Rayleigh-Benard-ConvectionFour Different Quantities in Turbulent Rayleigh-Bénard ConvectionEvolution of active vortex crystal superstructuresActive turbulenceFormation of a Lundgren spiral vortex

Visualization of a large-scale vortex dipole in 2D active nematic turbulence @turbulenceteamms