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Peer-reviewedCC BY-SA 4.0Physical Review E

Growth of helicity in salt-finger convection in the two-dimensional three-component limit

  • Smiron Varghese
  • Benjamin Miquel
  • Wouter Bos
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Abstract

We present an analytical investigation of the global helicity budget associated with the saltfingering instability within the two-dimensional, three-component framework. Our analysis shows that in the region of parameter space corresponding to salt-fingering, helicity amplification occurs when the Rayleigh ratio-quantifying the relative strength of salinity to temperature gradients-exceeds a critical threshold. This finding provides a possible theoretical explanation for the spontaneous emergence of helicity, observed in recent numerical simulations.

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Cite

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BibTeX
@article{varghese2026growth,
  title = {{Growth of helicity in salt-finger convection in the two-dimensional three-component limit}},
  author = {Smiron Varghese and Benjamin Miquel and Wouter Bos},
  journal = {Physical Review E},
  year = {2026},
  month = aug,
  doi = {10.1103/rrcr-h8l9},
  eprint = {2608.31010},
  archivePrefix = {arXiv},
  url = {https://hal.science/hal-05803337v1},
  note = {CC BY-SA 4.0},
}
RIS
TY  - JOUR
TI  - Growth of helicity in salt-finger convection in the two-dimensional three-component limit
AU  - Smiron Varghese
AU  - Benjamin Miquel
AU  - Wouter Bos
PY  - 2026
DA  - 2026/08/27
JO  - Physical Review E
DO  - 10.1103/rrcr-h8l9
UR  - https://hal.science/hal-05803337v1
AB  - We present an analytical investigation of the global helicity budget associated with the saltfingering instability within the two-dimensional, three-component framework. Our analysis shows that in the region of parameter space corresponding to salt-fingering, helicity amplification occurs when the Rayleigh ratio-quantifying the relative strength of salinity to temperature gradients-exceeds a critical threshold. This finding provides a possible theoretical explanation for the spontaneous emergence of helicity, observed in recent numerical simulations.
SN  - 2470-0045
SN  - 2470-0053
ER  -