脳前交通動脈回りの流体力学的構造と動脈りゅう発生 : 第2報, 速度分布と壁せん断応力〔流体工学, 流体機械〕

概要

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In the present paper, the velocity profile around the anterior communicating artery and the wall shear stress at the apex are described. The anterior communicating artery composing the circle of Willis is one of the predilection sites where 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 cerebral aneurysm is apt to initiate. In particular, the variation of wall shear stress around the apex at one confluent tube with a high flow rate is estimated from the velocity profile near tube wall, and the relation between the wall shear stress and the generation of aneurysm is discussed physiologically.
一般社団法人日本機械学会の論文
1998-06-25