2307 チャネル流中における複数の赤血球の変形挙動(OS23.生命体統合シミュレーション(2),ポスターセッションP-2)

概要

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The deformed behavior of multiple red blood cells in a channel flow is analyzed by direct numerical simulations. The flow of red blood cells in plasma is modeled with the immersed boundary method. The in-plane elastic tensions and the transverse shear tensions in the membrane accompanied with the flow-induced deformation are formulated in Cartesian coordinates according to Pozrikidis's work. The Skalak's hyper elastic model and neo-Hooken model are adopted for the calculation of different tensions respectively. The deformation and interaction of multiple red blood cells in a channel flow is reproduced. The numerical results show that in a channel flow with the diameter 4 times of volumetric equivalent diameter of the red blood cell, the apparent viscosity in the channel increases with the presence of red blood cells, and this viscosity decreases with the increase of the shear stress coefficient of the red blood cell's membrane.
2007-11-25