Lunedì 30 giugno 2025, alle ore 15, in aula 131 dell’edificio C del Dipartimento di Fisica, il prof. Federico Toschi (Technische Universiteit Eindhoven Department Applied Physics and Science Education), terrà il seminario Designing turbulence, con il seguente abstract:
Understanding the statistical properties of fluid dynamics turbulence remains a fundamental challenge in physics, with significant practical implications due to the prevalence of turbulent flows in nature and technology. Turbulence typically rapidly evolves toward a locally homogeneous and isotropic state, particularly at smaller scales and far from boundaries. The tendency towards this universal behavior poses challenges for efforts to control or design turbulence. This talk presents some recent ideas for effectively influencing turbulence by introducing forcing at the smallest scales using specialized “smart” particles. Starting from the case of turbulence in fluids with odd viscosity [1], I will discuss recent experimental, numerical and theoretical results concerning linearly [2] and angularly [3] forced particles in turbulence. Finally I will discuss evidences of stochastic resonance for particles in turbulence.
1] de Wit, X.M., Fruchart, M., Khain, T., Toschi, F. and Vitelli, V., 2024. Pattern formation by turbulent cascades. Nature, 627(8004), pp.515-521.
[2] Wang, Z., de Wit, X.M. and Toschi, F., 2024. Localization–delocalization transition for light particles in turbulence. Proceedings of the National Academy of Sciences, 121(38), p.e2405459121.
[3] Wang, Z., de Wit, X.M., Benzi, R., Wu, C., Kunnen, R.P., Clercx, H.J. and Toschi, F., 2025. Stochastic surfing turbulent vorticity. arXiv preprint arXiv:2504.08346