Abstract
Capsules like a red blood cells change their shapes in response to the local flow conditions in a capillary. In the present study, giant vesicles (GVs) are investigated as one of the simple models for bio-membrane capsules. Immersed-Boundary method was used to simulate these deformable GVs. At first, we expressed a GV model with the fluidity of membrane taken into account. Then, we analyzed the dependence on the parameter dominating the deformation of a GV in a 2-D Poisuille flow. As the last example, we conducted the 3-D numerical simulation of GVs and succeeded in showing 3-D GV deformed to a parachute shape in a rectangular capillary channel.
