Emergence of edge state in suspension of self-propelled particles
Fuente:
arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866912756773421056 |
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| author | Hiruta, Yoshiki Ishimoto, Kenta |
| author_facet | Hiruta, Yoshiki Ishimoto, Kenta |
| contents | We numerically study a model convection system of a suspension of self-propelled particles, motivated by recent experimental findings of localized and bistable bioconvection pattern, being distinct from classical Rayleigh--Bénard convection. Linear stability analysis of the model system reveals that the trivial noncovection state is stabilized by an increase of self-propelled speed in the vertical direction. Through numerical simulations, we found a nonlinear convection state even when the nonconvection state is stable. Applying ideas and tools developed in wall-bounded flows, we numerically identified an edge state, which is an unstable solution on a basin boundary in the model dynamical systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_09491 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Emergence of edge state in suspension of self-propelled particles Hiruta, Yoshiki Ishimoto, Kenta Fluid Dynamics We numerically study a model convection system of a suspension of self-propelled particles, motivated by recent experimental findings of localized and bistable bioconvection pattern, being distinct from classical Rayleigh--Bénard convection. Linear stability analysis of the model system reveals that the trivial noncovection state is stabilized by an increase of self-propelled speed in the vertical direction. Through numerical simulations, we found a nonlinear convection state even when the nonconvection state is stable. Applying ideas and tools developed in wall-bounded flows, we numerically identified an edge state, which is an unstable solution on a basin boundary in the model dynamical systems. |
| title | Emergence of edge state in suspension of self-propelled particles |
| topic | Fluid Dynamics |
| url | https://arxiv.org/abs/2512.09491 |