1. Capsule motion in flow: Deformation and membrane buckling
- Author
-
Barthès-Biesel, Dominique
- Subjects
- *
ARTIFICIAL membranes , *MECHANICAL buckling , *DEFORMATIONS (Mechanics) , *STOKES flow , *HYDRODYNAMICS , *SHEAR flow , *FLUID dynamics , *VISCOUS flow - Abstract
Abstract: The objective of this review is to present the salient features of capsule mechanical behaviour under the influence of viscous deforming forces due to a flowing fluid. We focus on artificial capsules that are initially spherical with an internal liquid core and that are enclosed by a very thin hyperelastic membrane. Different constitutive laws, commonly used to describe the rheological behaviour of thin membranes, are presented. The motion and deformation of a single capsule freely suspended in a simple shear flow is presented as a function of membrane constitutive law and of initial pre-stress. The limitations of classical membrane models that neglect bending effects are discussed. To cite this article: D. Barthès-Biesel, C. R. Physique 10 (2009). [Copyright &y& Elsevier]
- Published
- 2009
- Full Text
- View/download PDF