Wall shear stress and flow pattern with initiation of aneurysm around anterior communicating artery in steady flow

Ryuhei Yamaguchi, Susumu Kudo, Nobuhiko Nakazawa, Mikio Nakashima, Hiroahi Ujiie

研究成果: Contribution to journalArticle査読

抄録

In the present paper, the change of flow structure such as the wall shear stress at the apex of the anterior communicating artery with the initiation of aneurysm is described in steady 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 at normal condition. Once the small aneurysm initiates at the apex in one confluent tube with much flow rate, the distribution of wall shear stress abruptly changes around the initial aneurysm. This change may induce the progressive development of aneurysm. The relation between the initiation and the development of aneurysm is physiologically discussed from the viewpoint of hemodynamics.

本文言語英語
ページ(範囲)3006-3011
ページ数6
ジャーナルNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
68
675
DOI
出版ステータス出版済み - 11 2002
外部発表はい

All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 機械工学

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