ICTS:31619

Video URL

Emergent turbulence and coarsening arrest in active-spinner fluids

Emergent turbulence and coarsening arrest in active-spinner fluids

(2025). Emergent turbulence and coarsening arrest in active-spinner fluids. SciVideos. https://youtu.be/fajMt9lnapU

Emergent turbulence and coarsening arrest in active-spinner fluids. SciVideos, Apr. 22, 2025, https://youtu.be/fajMt9lnapU 

          @misc{ scivideos_ICTS:31619,
            doi = {},
            url = {https://youtu.be/fajMt9lnapU},
            author = {},
            keywords = {},
            language = {en},
            title = {Emergent turbulence and coarsening arrest in active-spinner fluids},
            publisher = {},
            year = {2025},
            month = {apr},
            note = {ICTS:31619 see, \url{https://scivideos.org/index.php/icts-tifr/31619}}
          }
Rahul Pandit
Talk numberICTS:31619
Source RepositoryICTS-TIFR
Collection

Abstract

We uncover activity-driven crossover from phase separation to a new turbulent state in a two- dimensional system of counter-rotating spinners. We study the statistical properties of this active- rotor turbulence using the active-rotor Cahn-Hilliard-Navier-Stokes model, and show that the vor- ticity ω ∝ ϕ, the scalar field that distinguishes regions with different rotating states. We explain this intriguing proportionality theoretically, and we characterize power-law energy and concentra- tion spectra, intermittency, and flow-topology statistics. We suggest biological implications of such turbulence. This work has been done with Biswajit Maji and Nadia Bihari Padhan. https://arxiv.org/abs/2503.03843