Effect of intermittency on pulsatile blood flow through a stenosed tube

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

Research output: Contribution to journalArticlepeer-review


It is well known that the fluid dynamics of arterial blood flow plays an important role in arterial diseases. The periodic blood flow, which has intermittent time, through a stenosed tube with a moving wall is analyzed numerically. The Windkessel model is used to express arterial wall movement and a revised Casson model is used for a constitutive equation of blood. The flow is assumed to be periodic, incompressible and axisymmetric. The influence of intermittency on flow through a stenosed tube is investigated. Stream lines, flow patterns and distributions of shear stress at the wall are obtained. The results show that the strength of the vortex is dominated by the reduced St number using angular velocity of unsteady time and that the effect of intermittency on flow is significant.

Original languageEnglish
Pages (from-to)690-697
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Issue number630
Publication statusPublished - 1999


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


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