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physics.flu-dyn2025
Probabilistic description of flake orientation suspended in rotating wave flows
Tomoaki Itano, Isshin Arai
In fluid dynamics experiments, flake-based flow visualization is a common technique to capture flow structures through the rays reflected from flat tracers suspended in the fluid.…
physics.flu-dyn2024
Revisiting visualization of spiral states in a wide-gap spherical Couette flow
Isshin Arai, Tomoaki Itano, Masako Sugihara-Seki
A pioneering study conducted by Egbers and Rath [Acta Mech. 111 pp. 125--140 (1995)] experimentally captured spiral waves to elucidate the transition in the wide-gap spherical Coue…