Resonance of vortex in pulsatile flow through asymmetric stenosis

Takuji Ishikawa, Shuzo Oshima, Ryuichiro Yamane

研究成果: Article査読

2 被引用数 (Scopus)

抄録

It is well known that fluid dynamical phenomena in arterial blood flow can play an important role in arterial diseases. Flow between flat plates with asymmetric stenosis is analyzed numerically. The fluid is assumed to be Newtonian and incompressible, and the flow is assumed to be periodic in time. It is found that the vortex downstream of asymmetric stenosis becomes strongest at a certain frequency of pulsation. This phenomenon is called vortex resonance in this paper. The flow pattern, the vortex strength and the distributions of wall shear stress are obtained. The results show that the resonance frequency changes with wall configuration and Reynolds number. The vortex resonance occurs where the difference between the adverse pressure and the friction on the wall is maximum.

本文言語English
ページ(範囲)3546-3553
ページ数8
ジャーナルNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
65
639
DOI
出版ステータスPublished - 1999 11月
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学
  • 機械工学

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