Abstract
A red blood cell (RBC) which is ordinarily a biconcave shape can be deformed by external forces. The dynamic property of RBC membrane is modeled by stretching springs and bending springs. In this model, RBC is surrounded by a fluid in three dimensions and the membrane interacts with the fluid using the MPS method. It was shown that the stretching spring constant Kl and the bending spring constant Kb relate to the shape of RBC, and the biconcave shape appears when Kl=1.0×10^<-6> [N/m] and Kb=1.0×10^<-12> [N].
