1108 左心室と大動脈における血流動態のマルチスケール連成数値解析(S02-2 循環器系・呼吸器系の生体機能モデリング(2),S02 循環器系・呼吸器系の生体機能モデリング)

概要

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The purpose of this study is to investigate the effect of the three-dimensional (3D) velocity vector distribution at the inlet/outlet of an arterial segment on the 3D flow patterns in it. To this aim, a heterogeneous multi-scale hemodynamic simulation system, which includes a 3D CFD solver for the left ventricle (LV), a 3D CFD solver for artery, and a lumped parameter model of the circulatory system, is constructed. Hemodynamic computations in the aorta together with 7 arterial branches are carried out in a LV-aorta-coupled 3D aortic-inlet flow condition and in a Womersley-solution-based aorta-inlet flow condition, respectively. Comparisons between the two sets of computed results reveal that the 3D velocity vector distribution at the aortic inlet strongly affect the flow patterns in the ascending and the descending aortas, and the influence can even extend to the abdominal aorta and the neighborhood arterial branches.
社団法人日本機械学会の論文
2007-09-07