論文

査読有り
2014年10月15日

Lateral migration of a spherical capsule near a plane wall in Stokes flow

Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
  • S. Nix
  • ,
  • Y. Imai
  • ,
  • D. Matsunaga
  • ,
  • T. Yamaguchi
  • ,
  • T. Ishikawa

90
4
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevE.90.043009

© 2014 American Physical Society. Lateral migration is the motion of a particle perpendicular to the direction of the surrounding flow. One of the factors leading to the lateral migration of a deformable particle in Stokes flow is the presence of a nearby wall. We numerically investigate the lateral migration of a capsule in a near-wall simple shear flow using a boundary integral method coupled with a finite element method. We find that asymmetrical deformation of the capsule induced by the wall is correlated with a reduction in the lift velocity relative to the lift velocity predicted by a far-field analytical solution. A combination of this asymmetrical deformation, which decreases the lift velocity, and an increase in the value of the capsule stresslet near the wall, which works to increase the lift velocity, leads to a migration velocity that is nearly independent of capillary number and membrane constitutive law at large deformation near the wall.

リンク情報
DOI
https://doi.org/10.1103/PhysRevE.90.043009
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/25375595
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84908426215&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=84908426215&origin=inward

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