4 papers
Phase-symmetry breaking as a mechanism for subcritical transition in shell models of turbulence
Yoshiki Hiruta
Subcritical transition to turbulence, in which the laminar state is linearly stable yet finite-amplitude perturbations develop into turbulence, is ubiquitous but lacks a simple ana…
Most probable path and invariant sets in noise-induced transition to turbulence
Yoshiki Hiruta, Kento Yasuda, Kenta Ishimoto
Turbulence transition often arises from a subcritical transition between bistable states characterized by invariant sets of deterministic dynamical systems, and such transitions ca…
Emergence of edge state in suspension of self-propelled particles
Yoshiki Hiruta, Kenta Ishimoto
We numerically study a model convection system of a suspension of self-propelled particles, motivated by recent experimental findings of localized and bistable bioconvection patter…
Localization and bistability of bioconvection in a doubly periodic domain
Yoshiki Hiruta, Kenta Ishimoto
A suspension of swimming microorganisms often generates a large-scale convective pattern known as bioconvection. In contrast to the thermal Rayleigh-Benard system, recent experimen…