B113 脳動脈瘤モデル内の流動特性に関する実験的研究(B-11 生体流体(1),一般講演)

概要

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In order to elucidate the flow characteristics in the cerebral aneurysms, the flow field in the acrylic aneurysm model has been measured by LDV. The three kinds of flows, i.e., the steady flow, the sinusoidally oscillating flow and the pulsatile flow are investigated. It is found that the mean velocity vectors in the carotid flow show the larger values at the bottom of the aneurysm's model than in the steady flow, and the area with the large fluctuation r.m.s. value in the pulsatile flow has expanded in to the inside of aneurysm model in comparison with one in the steady flow. The distributions of phase-averaged fluctuation velocity r.m.s. value have been also investigated. The main streamwise r.m.s. values become large near the inlet and the downstream side wall when the velocity acceleration shows the negative maximum.
日本流体力学会の論文
2004-08-09