[Seminar] Dynamics of non-spherical deformable capsule in a Newtonian fluid – Numerical analysis of flow behavior of red blood cells

Speaker

Naoki Takeishi (Ph.D)
Graduate School of Engineering Science, Osaka University.

Title

Dynamics of non-spherical deformable capsule in a Newtonian fluid
– Numerical analysis of flow behavior of red blood cells –

Abstract

I present a numerical analysis of flow behaviors of red blood cell (RBC) in a Newtonian fluid, where two different background flows are considered: an almost inertialess oscillatory shear flow and a channel flow with finite inertia. The RBC is modeled as a biconcave capsule of a Newtonian fluid enclosed by a thin elastic membrane, modeled as an isotropic and hyperelastic material. In the oscillatory shear flow, the viscoelastic character of the RBC suspension is investigated for different frequencies, while in the channel flow, the inertial migration of a single RBC is investigated for different Reynolds and Capillary numbers. These numerical results can provide insights into the precise diagnosis of patients with hematologic disorders or cell separation techniques.

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