Mass transport in pulsatile blood flow with intermittency through a stenosed aorta

Yoshiyuki Waki, Takuji Ishikawa, Shuzo Oshlma, Ryuichiro Yamane, Motoharu Hasegawa

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 pulsatile blood flow, which has intermittent time, through an stenosed aorta is analyzed numerically. Flow is assumed to be periodic and axisymmetric. Non-Newtonian viscosity of blood and movement of arterial wall are considered. The effect of intermittency, pulsation and wall movement on mass transport is investigated. Flow pattern, concentration pattern and distribution of concentration on the wall are obtained. It is found that the instantaneous mass flux on the wall is dominated by the apparent St number using angular velocity of unsteady time. However, time-mean mass flux is influenced by the, intermittent time. The flow intermittency contributes to smoothing the concentration distribution and decreasing the time-mean mass flux on the wall.

Original languageEnglish
Pages (from-to)1362-1369
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume65
Issue number632
DOIs
Publication statusPublished - 1999

Keywords

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

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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