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PreprintCC BY 4.0arXiv

Zero-Mean Oscillations Drive Recirculations in Potential Flows at Vanishing Reynolds Number

  • Alexandre S. Avaro
  • Leon V. Gebhard
  • Gabriel Amselem
  • Charles N. Baroud
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Abstract

Recirculating flows are central to transport phenomena, but their generation in potential flows requires additional physical mechanisms. We show experimentally that recirculation at vanishing Reynolds number can be produced at prescribed locations by coupling oscillations of a Hele-Shaw cell ceiling with an off-center passive obstacle. The net drift is well described by a potential flow model with no adjustable parameters. The resulting flows are localized around the obstacles and can be combined to generate programmable flow patterns at the microscale.

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Cite

BibTeXRIS
BibTeX
@misc{avaro2026zeromean,
  title = {{Zero-Mean Oscillations Drive Recirculations in Potential Flows at Vanishing Reynolds Number}},
  author = {Alexandre S. Avaro and Leon V. Gebhard and Gabriel Amselem and Charles N. Baroud},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.31196},
  eprint = {2609.31196},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.31196},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Zero-Mean Oscillations Drive Recirculations in Potential Flows at Vanishing Reynolds Number
AU  - Alexandre S. Avaro
AU  - Leon V. Gebhard
AU  - Gabriel Amselem
AU  - Charles N. Baroud
PY  - 2026
DA  - 2026/09/25
PB  - arXiv
DO  - 10.48550/arxiv.2609.31196
UR  - https://arxiv.org/abs/2609.31196
AB  - Recirculating flows are central to transport phenomena, but their generation in potential flows requires additional physical mechanisms. We show experimentally that recirculation at vanishing Reynolds number can be produced at prescribed locations by coupling oscillations of a Hele-Shaw cell ceiling with an off-center passive obstacle. The net drift is well described by a potential flow model with no adjustable parameters. The resulting flows are localized around the obstacles and can be combined to generate programmable flow patterns at the microscale.
ER  -