Mass transport in blood flow through an stenosed tube

Takuji Ishikawa, Shuzo Oshima, Ryuichiro Yamane

Research output: Contribution to journalArticlepeer-review

Abstract

It is pointed out that mass transport in an artery, such as LDL transport, influences the progression of stenosis severely. Mass transport in blood flow through an stenosed tube is analyzed numerically. Flow is assumed to be periodic, incompressible and axisymmetric. Non-Newtonian viscosity of blood and movement of arterial wall are considered. The effect of pulsation, non-Newtonian property of blood and wall movement on mass transport is investigated. Flow pattern, concentration pattern and distribution of concentration gradient on the wall are obtained. It is found that the effect of the vortex on mass transport on the wall changes drastically with Schmidt number. In low Schmidt number flow the strength of vortex and its center position is important. Therefore, time-mean mass transport on the wall has maximum value at certain frequency because of the resonance of the vortex. On the other hand, whether the vortex downstream of the stenosis flows away or not becomes important in high Schmidt number flow.

Original languageEnglish
Pages (from-to)2774-2781
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume64
Issue number625
DOIs
Publication statusPublished - 1998

Keywords

  • Bio-fluid mechanics
  • Diffusion
  • Fluid dynamics
  • Non-newtonian fluid
  • Numerical analysis
  • Pulsation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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