Numerical Simulation of Red Blood Cell through a Stenosed Vessel Using Lattice Boltzmann-Immersed Boundary Method

In this research, motion and deformation of both healthy and sick red blood cell (RBC) are simulated in a vessel with constriction using combined Lattice Boltzmann-Immersed Boundary (LB-IB) method. The surface of RBC is considered to be a deformable immersed body in the fluid flow. The interaction of the fluid and RBC is modeled using an appropriate form of the Dirac delta function. In the cases where the RBC is placed on the symmetry axis of the channel, they continue to move and deform without any lift force and rotation induced. The healthy RBC always show more deformation along the channel in comparison with the sick one. The present results have been compared with the available experimental and numerical results, which show good agreements.