Transport efficiency of metachronal waves in 3d cilia arrays immersed in a two-phase flow - Archive ouverte HAL Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2016

Transport efficiency of metachronal waves in 3d cilia arrays immersed in a two-phase flow

Résumé

The present work reports the formation and the characterization of antipleptic and symplectic metachronal waves in 3D cilia arrays immersed in a two-fluid environment, with a viscosity ratio of 20. A coupled lattice-Boltzmann-Immersed-Boundary solver is used. The periciliary layer is confined between the epithelial surface and the mucus. Its thickness is chosen such that the tips of the cilia can penetrate the mucus. A purely hydrodynamical feedback of the fluid is taken into account and a coupling parameter α is introduced allowing the tuning of both the direction of the wave propagation, and the strength of the fluid feedback. A comparative study of both antipleptic and symplectic waves, mapping a cilia inter-spacing ranging from 1.67 up to 5 cilia length, is performed by imposing the metachrony. Antipleptic waves are found to systematically outperform sympletic waves. They are shown to be more efficient for transporting and mixing the fluids, while spending less energy than symplectic, random, or synchronized motions.
Fichier principal
Vignette du fichier
jfm-instructions.pdf (1.09 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01494742 , version 1 (23-03-2017)

Identifiants

Citer

Sylvain Chateau, Julien Favier, Umberto D 'Ortona, Sébastien Poncet. Transport efficiency of metachronal waves in 3d cilia arrays immersed in a two-phase flow. 2016. ⟨hal-01494742⟩
96 Consultations
139 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More