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PreprintCC BY 4.0arXiv

Marangoni flow induced by crystallization in saline droplets

  • Théophile Gaichies
  • Javier Martínez-Puig
  • Javier Rodríguez Rodríguez
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Abstract

In this article, we study the flow induced by crystallization of sodium chloride in sessile droplets. We measure flow velocities on the order of 1 $\mathrm{cm.s^{-1}} during crystallization, two orders of magnitude higher than those reported in previous studies. We show that this discrepancy is due to surface contaminants in earlier experiments. Numerical simulations reveal that in the clean case, the flow is driven by Marangoni stresses, whereas it is density- driven in the contaminated case. Consequently, droplet cleanliness significantly influences the flow which, in turn, determines the growth rate of crystals.

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Cite

BibTeXRIS
BibTeX
@misc{gaichies2026marangoni,
  title = {{Marangoni flow induced by crystallization in saline droplets}},
  author = {Théophile Gaichies and Javier Martínez-Puig and Javier Rodríguez Rodríguez},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.07543},
  eprint = {2609.07543},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.07543},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Marangoni flow induced by crystallization in saline droplets
AU  - Théophile Gaichies
AU  - Javier Martínez-Puig
AU  - Javier Rodríguez Rodríguez
PY  - 2026
DA  - 2026/09/07
PB  - arXiv
DO  - 10.48550/arxiv.2609.07543
UR  - https://arxiv.org/abs/2609.07543
AB  - In this article, we study the flow induced by crystallization of sodium chloride in sessile droplets. We measure flow velocities on the order of 1 $\mathrm{cm.s^{-1}} during crystallization, two orders of magnitude higher than those reported in previous studies. We show that this discrepancy is due to surface contaminants in earlier experiments. Numerical simulations reveal that in the clean case, the flow is driven by Marangoni stresses, whereas it is density- driven in the contaminated case. Consequently, droplet cleanliness significantly influences the flow which, in turn, determines the growth rate of crystals.
ER  -