TY - JOUR
T1 - Wall shear stress and flow pattern with initiation of aneurysm around anterior communicating artery in steady flow
AU - Yamaguchi, Ryuhei
AU - Kudo, Susumu
AU - Nakazawa, Nobuhiko
AU - Nakashima, Mikio
AU - Ujiie, Hiroahi
N1 - Funding Information:
The reserhacreportdeintishpaper has been performed wihitn tehframework of tehDGIYCT Project No. PB94-0986 of Spain and of tehEuropean Comism sion TMR netowrk contract ERB FMRX-TC96-0709 (QuantmuChemitrsy of tehExcitdeSttea). Tecnichal
PY - 2002/11
Y1 - 2002/11
N2 - 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.
AB - 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.
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U2 - 10.1299/kikaib.68.3006
DO - 10.1299/kikaib.68.3006
M3 - Article
AN - SCOPUS:0036875042
SN - 0387-5016
VL - 68
SP - 3006
EP - 3011
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
IS - 675
ER -