2026-06-03T08:21:12Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/406422026-02-03T11:12:44Zcom_10630_2254col_10630_37953

Tumbling elimination induced by permeability: An experimental approach Sánchez-Rodríguez, Jesús Gallaire, François Dinámica de fluidos https://openpolicyfinder.jisc.ac.uk/id/publication/32290 Archetypal falling behaviors of impervious objects are classified into four modes: fluttering, tumbling, steady descent, and chaotic motion. The classical scenario predicts these behaviors to be affected by three dimensionless quantities: thickness-to-width ratio, dimensionless inertia, and Reynolds number. In this article we explore experimentally the effect of permeability and porosity on the falling regimes of porous plates. By drilling several hole distributions in rectangular plates, both permeability and porosity are varied systematically. We discover that the introduction of porosity affects the stability of the falling regimes eliminating tumbling. Using a phenomenological model we show that a decrease in circulation induced by the introduction of holes is the primary mechanism for stabilizing the plates’ trajectories. 2025-11-07T10:44:23Z 2025-11-07T10:44:23Z 2025-01-21 journal article Sánchez-Rodríguez, J., & Gallaire, F. (2025). Tumbling elimination induced by permeability: An experimental approach. Physical Review Fluids, 10(1), 013904. https://hdl.handle.net/10630/40642 10.1103/PhysRevFluids.10.013904 eng open access American Physical Society