Taylor dispersion in a soft channel
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866915920309387264 |
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| author | Jha, Aditya Gunny, Masoodah Mcgraw, Joshua D Amarouchene, Yacine Salez, Thomas |
| author_facet | Jha, Aditya Gunny, Masoodah Mcgraw, Joshua D Amarouchene, Yacine Salez, Thomas |
| contents | Diffusion of a solute along a channel is enhanced by hydrodynamic flow, a phenomenon known as Taylor dispersion. In microfluidic applications, the compliance of the channel boundaries modifies the hydrodynamic flow and thus solutal transport. Here, we develop the theory of solutal dispersion in a soft, axisymmetric channel where the channel walls respond to the hydrodynamic pressure through a Winkler response. By deriving the modified macro-transport equation for the solutal concentration dynamics based on multiple-time-scale analysis, we explore the influence of softness on solutal transport for steady and pulsatile configurations. Our main finding is that softness enhances the effective advection velocity and dispersion coefficient, which might have practical implication in biology and microfluidic technology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_05592 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Taylor dispersion in a soft channel Jha, Aditya Gunny, Masoodah Mcgraw, Joshua D Amarouchene, Yacine Salez, Thomas Soft Condensed Matter Statistical Mechanics Classical Physics Fluid Dynamics Diffusion of a solute along a channel is enhanced by hydrodynamic flow, a phenomenon known as Taylor dispersion. In microfluidic applications, the compliance of the channel boundaries modifies the hydrodynamic flow and thus solutal transport. Here, we develop the theory of solutal dispersion in a soft, axisymmetric channel where the channel walls respond to the hydrodynamic pressure through a Winkler response. By deriving the modified macro-transport equation for the solutal concentration dynamics based on multiple-time-scale analysis, we explore the influence of softness on solutal transport for steady and pulsatile configurations. Our main finding is that softness enhances the effective advection velocity and dispersion coefficient, which might have practical implication in biology and microfluidic technology. |
| title | Taylor dispersion in a soft channel |
| topic | Soft Condensed Matter Statistical Mechanics Classical Physics Fluid Dynamics |
| url | https://arxiv.org/abs/2604.05592 |