Modeling of an erythrocyte by beads and springs and the numerical analysis of blood flow under the constant shear field

Takuji Ishikawa, Nobuyoshi Kawabata, Motoyoshi Tachibana

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The blood flow in large arteries is commonly analyzed by means of the constitutive equations. However, it is not appropriate to use constitutive equations for small arteries because of the heterogeneity of the blood. In this paper, a new method to model an erythrocyte by using beads and springs is proposed as an alternative to analyze the blood flow. The behavior of a single erythrocyte is computed under a constant shear field. The rotating attitude of an erythrocyte, shear viscosity, normal stress difference coefficient and stress thinning are discussed. The results show that the bead-spring model appropriately can simulate the tank tread motion of an erythrocyte under a high shear field and stress thinning. It is therefore considered that the bead-spring erythrocyte model is able to consistently express blood characteristics.

Original languageEnglish
Pages (from-to)2642-2649
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume66
Issue number650
DOIs
Publication statusPublished - 2000 Oct
Externally publishedYes

Keywords

  • Bio-fluid mechanics
  • Erythrocyte
  • Non-newtonian fluid
  • Numerical analysis
  • Shear flow
  • Viscoelastic fluid

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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