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physics.flu-dyn2026
Diffusion Enhancement and Directional Suppression Induced by Reciprocal Flows
Yuki Koyano, Hiroyuki Kitahata, Takeshi Ooshida
Reciprocal flows repeatedly return fluid elements to their initial positions, producing no net advective transport on time average. Nevertheless, their interplay with diffusion giv…
nlin.AO2026
Intrinsic speed characteristics of a self-propelled camphor disk under repulsive perturbations
Yuki Koyano, Jerzy Górecki, Hiroyuki Kitahata
Camphor is a well-studied material capable of generating self-propelled motion at a water surface, and the resulting dynamics can exhibit a wide range of behaviors. Here, we analyz…