Shape diagram of vesicles in Poiseuille flow |
| |
Authors: | Coupier Gwennou Farutin Alexander Minetti Christophe Podgorski Thomas Misbah Chaouqi |
| |
Affiliation: | Laboratoire Interdisciplinaire de Physique, CNRS et Université J. Fourier-Grenoble I, Saint-Martin d'Hères, France. gwennou.coupier@ujf-grenoble.fr |
| |
Abstract: | Soft bodies flowing in a channel often exhibit parachutelike shapes usually attributed to an increase of hydrodynamic constraint (viscous stress and/or confinement). We show that the presence of a fluid membrane leads to the reverse phenomenon and build a phase diagram of shapes-which are classified as bullet, croissant, and parachute-in channels of varying aspect ratio. Unexpectedly, shapes are relatively wider in the narrowest direction of the channel. We highlight the role of flow patterns on the membrane in this response to the asymmetry of stress distribution. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|