Wall shear stress and initiation of aneurysm around anterior communicating artery in pulsating flow

Ryuhei Yamaguchi, Susumu Kudo, Hiroyuki Yamanobe, Mikio Nakashima, Ryota Sugihara, Hiroshi Ujiie

Research output: Contribution to journalArticlepeer-review

Abstract

In the present paper, the velocity profile, the wall shear stress and its gradient at the apex of the anterior communicating artery are described in pulsating flow. The anterior communicating artery composing the circle of Willis is one of the predilection sites where the cerebral aneurysm occurs frequently. The flow field around the anterior communicating artery is simulated by two confluent tubes joining at the angle of 60 degrees, two parallel bifurcating tubes, and the junctional tube, bypass, connecting four tubes. The velocity profile is clarified around the apex where the cerebral aneurysm is apt to initiate. In particular, the gradient of wall shear stress around the apex at one confluent tube with much flow rate is estimated, and the relation between the gradient of wall shear stress and the initiation of aneurysm is discussed physiologically.

Original languageEnglish
Pages (from-to)3124-3130
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume66
Issue number652
DOIs
Publication statusPublished - Dec 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

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