4 citations · 14 across the 10 of their papers we have counts for
11 papers
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…
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…
Inferring Coupled Stuart-Landau Equations from Waveforms
Yuki Araya, Hiroaki Ito, Hiroshi Kori +1
We present a data-driven framework to infer phase-amplitude equations of coupled limit-cycle oscillators directly from waveform measurements. Exploiting the universality of the Stu…
Higher-codimension points as organizing centers in nonreciprocal pattern-forming systems with O(2)-symmetry
Yuta Tateyama, Daniel Greve, Hiroaki Ito +3
Focusing on a two-field Swift-Hohenberg model with linear nonreciprocal interactions, this study investigates how emerging higher-codimension points act as organizing centers for t…
Energetics-based model for a diffusiophoretic motion of a deformable droplet
Hiroyuki Kitahata, Yuki Koyano, Yasuaki Kobayashi +1
We construct a mathematical model for a diffusiophoretic motion of a deformable droplet, which is floating on a liquid surface and is driven by the surface tension gradient origina…
Modeling the time evolution of a camphor rotor perturbed by a stationary camphor source
Jerzy Gorecki, Yuki Koyano, Hiroyuki Kitahata
A self-propelled motion resulting from the dissipation of camphor molecules on the water surface has been attracting scientific attention for more than 200 years. A generally accep…
Simple mathematical model for a pairing-induced motion of active and passive particles
Hiroaki Ishikawa, Yuki Koyano, Hiroaki Ito +2
We propose a simple mathematical model that describes a pairing-induced motion of active and passive particles in a two-dimensional system, which is motivated by our previous paper…
Pattern dynamics of the nonreciprocal Swift-Hohenberg model
Yuta Tateyama, Hiroaki Ito, Shigeyuki Komura +1
We investigate the pattern dynamics of the one-dimensional nonreciprocal Swift-Hohenberg model. Characteristic spatiotemporal patterns such as disordered, aligned, swap, chiral-swa…
Deformation dynamics of an oil droplet into a crescent shape during intermittent motion
Sayaka Otani, Hiroaki Ito, Tomonori Nomoto +3
A paraffin droplet containing camphor and oil red O (dye) floating on the water surface shows spontaneous motion and deformation generated by the surface tension gradient around th…
Two-dimensional hydrodynamic simulation for synchronized oscillatory flows in two collapsible channels connected in parallel
Yuki Araya, Hiroaki Ito, Hiroyuki Kitahata
We investigated self-sustained oscillation in a collapsible channel, in which a part of one rigid wall is replaced by a thin elastic wall, and synchronization phenomena in the two…
Experimental study on the bifurcation of a density oscillator depending on density difference
Hiroaki Ito, Taisuke Itasaka, Nana Takeda +1
Hydrodynamic instabilities often cause spatio-temporal pattern formations and transitions between them. We investigate a model experimental system, a density oscillator, where the…