A new SPH density formulation for 3D free-surface flows

In this paper, a new density formulation for free surface simulations using SPH is presented. This new approach is applicable to surface-tension driven free surface flows with strong topological changes. The density is corrected for each particle by analytically calculating the missing volume of the support domain. This calculation depends on two parameters: the local curvature and the distance of each particle to the free surface. This method was validated and compared with the density evolution method for two test cases: the square droplet and the Rayleigh–Plateau instability. It shows more stable results and a better representation of the free surface.

Mots clés

SPH Free surface Density correction Curvature Surface tension

Domaines

Génie des procédés

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S0045793021003145.pdf (794.37 Ko)

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Soumis le : vendredi 5 janvier 2024-14:54:09

Dernière modification le : vendredi 2 février 2024-03:12:35

Dates et versions

emse-03561813 , version 1 (05-01-2024)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

HAL Id : emse-03561813 , version 1
DOI : 10.1016/j.compfluid.2021.105193
PII : S0045-7930(21)00314-5

Citer

Sandra Geara, Sylvain Martin, S. Adami, W. Petry, J. Allenou, et al.. A new SPH density formulation for 3D free-surface flows. Computers and Fluids, 2022, 232, pp.105193. ⟨10.1016/j.compfluid.2021.105193⟩. ⟨emse-03561813⟩

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