Comptes Rendus
no. 12
On the slow gravity-driven migration of arbitrary clusters of small solid particles
[Sur la sédimentation d'une assemblée quelconque de particules solides.]

Présenté par : Évariste Sanchez-Palencia

Antoine Sellier1
1 LadHyX, École polytechnique, 91128 Palaiseau cedex, France
Comptes Rendus. Mécanique, Volume 332 (2004) no. 12, pp. 987-992.

On propose une approche originale pour déterminer le mouvement d'une assemblée de particules solides et de formes arbitraires soumise à l'action de la pesanteur dans l'approximation de Stokes. Outre les intégrales de frontière et la méthode numérique associées on présente quelques comparaisons et examine le cas de deux configurations de sphères et ellipsoides de révolution équivalents, c'est-à-dire dotés lorsqu'ils sont seuls de la même vitesse de sédimentation.

A new approach is advocated to compute at a low cpu time cost the rigid-body motions of settling solid particles when inertial effects are negligible. In addition to the relevant boundary-integral equations, the numerical implementation and a few convincing benchmark tests we address two configurations of equivalent spheres and spheroids, i.e. that exhibit when isolated the same settling velocity.

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crme.2004.09.002
Keywords: Fluid mechanics, Sedimentation, Particle–particle interactions, Boundary-integral
Mot clés : Mécanique des fluides, Sédimentation, Interactions, Équations de frontière
Antoine Sellier 1

1 LadHyX, École polytechnique, 91128 Palaiseau cedex, France 
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Antoine Sellier. On the slow gravity-driven migration of arbitrary clusters of small solid particles. Comptes Rendus. Mécanique, Volume 332 (2004) no. 12, pp. 987-992. doi : 10.1016/j.crme.2004.09.002. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2004.09.002/

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