Effects of insoluble surfactants on breaking waves: regular and spilling regimes

Abstract

We investigate the influence of insoluble surfactants on the spatio-temporal evolution of breaking waves, focusing on both regular and spilling regimes. Three-dimensional direct numerical simulations are conducted using an interface-tracking/level-set method that incorporates surfactant-induced Marangoni stresses. The simulations reveal that surfactant gradients, through Marangoni stresses, markedly alter the wave dynamics. While regular breakers exhibit only minor modifications in the presence of surfactants, increasing surfactant-induced Marangoni stresses in spilling breakers leads to changes in the crest evolution and vorticity generation. Surfactants enhance spilling breakers, primarily driven by Marangoni stresses rather than surface tension reduction. To quantify these effects, we also extend circulation-based theoretical frameworks to account for surfactant contributions.

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BibTeX RIS

BibTeX

@article{wang2026effects,
  title = {{Effects of insoluble surfactants on breaking waves: regular and spilling regimes}},
  author = {B. Wang and J. Chergui and Seungwon Shin and Damir Juric and C.R. Constante-Amores},
  journal = {Journal of Fluid Mechanics},
  year = {2026},
  month = aug,
  doi = {10.1017/jfm.2026.11870},
  eprint = {2507.11876},
  archivePrefix = {arXiv},
  url = {https://hal.science/hal-05744680v1},
  note = {CC BY-NC-ND 4.0},
}

RIS

TY  - JOUR
TI  - Effects of insoluble surfactants on breaking waves: regular and spilling regimes
AU  - B. Wang
AU  - J. Chergui
AU  - Seungwon Shin
AU  - Damir Juric
AU  - C.R. Constante-Amores
PY  - 2026
DA  - 2026/08/12
JO  - Journal of Fluid Mechanics
DO  - 10.1017/jfm.2026.11870
UR  - https://hal.science/hal-05744680v1
AB  - We investigate the influence of insoluble surfactants on the spatio-temporal evolution of breaking waves, focusing on both regular and spilling regimes. Three-dimensional direct numerical simulations are conducted using an interface-tracking/level-set method that incorporates surfactant-induced Marangoni stresses. The simulations reveal that surfactant gradients, through Marangoni stresses, markedly alter the wave dynamics. While regular breakers exhibit only minor modifications in the presence of surfactants, increasing surfactant-induced Marangoni stresses in spilling breakers leads to changes in the crest evolution and vorticity generation. Surfactants enhance spilling breakers, primarily driven by Marangoni stresses rather than surface tension reduction. To quantify these effects, we also extend circulation-based theoretical frameworks to account for surfactant contributions.
SN  - 0022-1120
SN  - 1469-7645
ER  -

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