Scholarlink

<p>We investigate the behavior of droplets flowing through flexible rectangular channels and uncover a fascinating phenomenon: pancake-shaped confined droplets migrate transversely toward the channel center. Our findings reveal that this migration is driven by a gradient in interfacial energy, created by the deformation of the channel under the flow of the carrier phase. To explain this behavior, we introduce a simple hydrodynamic model that accurately predicts the trajectories of individual droplets and their dependence on key experimental parameters, such as droplet volume and total flow rate. In concentrated emulsions, this effect results in a striking segregation phenomenon, where all droplets converge and concentrate in the central region of the channel. These insights pave the way for deeper understanding and control of droplet dynamics in confined environments.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Migration and segregation of confined droplets flowing in flexible channels with a rectangular cross-section

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年7月25日

查看全文
  • Alexandre Guelluy,
  • Nassib Abdallah,
  • Guenaelle Hauret,
  • Pascal Panizza,
  • Enric Santanach-Carreras

摘要

We investigate the behavior of droplets flowing through flexible rectangular channels and uncover a fascinating phenomenon: pancake-shaped confined droplets migrate transversely toward the channel center. Our findings reveal that this migration is driven by a gradient in interfacial energy, created by the deformation of the channel under the flow of the carrier phase. To explain this behavior, we introduce a simple hydrodynamic model that accurately predicts the trajectories of individual droplets and their dependence on key experimental parameters, such as droplet volume and total flow rate. In concentrated emulsions, this effect results in a striking segregation phenomenon, where all droplets converge and concentrate in the central region of the channel. These insights pave the way for deeper understanding and control of droplet dynamics in confined environments.