大動脈分岐部拍動流に及ぼす血管弾性の影響 : モデル管内流れの可視化による検討 (<小特集>バイオエンジニアリング)

概要

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To understand the effect of wall elasticity on pulsatile blood flow, the structure of physiological pulsatile flow was studied in a rigid and elastic aortic bifurcation models by means of a flow visualization technique. In both models, flow separation was observed at the lateral wall of bifurcation during the accelerated and decelerated flow periods ; secondary flow existed inside the flow separation. Although flow in the rigid model was strongly disturbed during the decelerated and back-flow periods, flow disturbances were minor in the elastic model. The scale of the flow separation zone was larger in the elastic model than in the rigid model. According to these results, wall elasticity reduces flow disturbances in aortic bifurcation, and possibly affects wall shear stress which is an important factor in atherogenesis.
社団法人日本機械学会の論文
1994-11-25