脈動流中の脳前交通動脈回りの壁せん断応力と動脈瘤発生

概要

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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 around the anterior communicating artery is simulated by two confluent tubes joining at the angle of 60 degress, 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.
社団法人日本機械学会の論文
2000-12-25