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001     911404
005     20240712112926.0
024 7 _ |a 10.1063/5.0093043
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024 7 _ |a 1070-6631
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024 7 _ |a 1089-7666
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024 7 _ |a 1527-2435
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024 7 _ |a 2128/33803
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024 7 _ |a WOS:000811423800006
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037 _ _ |a FZJ-2022-04687
041 _ _ |a English
082 _ _ |a 530
100 1 _ |a Pelusi, Francesca
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245 _ _ |a Liquid film rupture beyond the thin-film equation: A multi-component lattice Boltzmann study
260 _ _ |a [S.l.]
|c 2022
|b American Institute of Physics
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520 _ _ |a Under the condition of partial surface wettability, thin liquid films can be destabilized by small perturbations and rupture into droplets. Assuccessfully predicted by the thin film equation (TFE), the rupture dynamics are dictated by the liquid–solid interaction. The theorydescribes the latter using the disjoining pressure or, equivalently, the contact angle. The introduction of a secondary fluid can lead to a richerphenomenology, thanks to the presence of different fluid/surface interaction energies but has so far not been investigated. In this work, westudy the rupture of liquid films with different heights immersed in a secondary fluid using a multi-component lattice Boltzmann (LB)approach. We investigate a wide range of surface interaction energies, equilibrium contact angles, and film thicknesses. We found that therupture time can differ by about one order of magnitude for identical equilibrium contact angles but different surface free energies.Interestingly, the TFE describes the observed breakup dynamics qualitatively well, up to equilibrium contact angles as large as 130. A smallfilm thickness is a much stricter requirement for the validity of the TFE, and agreement with LB results is found only for ratios e ¼ h=L ofthe film height h and lateral system size L, such as e 103.
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536 _ _ |a DFG project 431791331 - SFB 1452: Katalyse an flüssigen Grenzflächen
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700 1 _ |a Sega, M.
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700 1 _ |a Harting, J.
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773 _ _ |a 10.1063/5.0093043
|g Vol. 34, no. 6, p. 062109 -
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|t Physics of fluids
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856 4 _ |y Published on 2022-06-14. Available in OpenAccess from 2023-06-14.
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