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- W1976230170 abstract "Steady flow in a complete by-pass tube was simulated numerically. The study was to consider a complete flow field, which included both the by-pass and the host tubes. The changes of the hemodynamics were investigated with three parameters: the inlet flow Reynolds number (Re), anastomotic angle (α) and the position of the occlusion in the host tube. The baseline flow field was set up with Re=200, α=45° and the centered position of occlusion. The parametric study was then conducted on combination of Re=100, 200, 400, α=35°, 45°, 60°, 75°, 90° and three occlusion positions: left, center and right. It was found that in the baseline case, large slow/recirculation flows could be seen in the host tube both upstream and downstream of the occlusion. The separation points were on the opposite walls to the junctions. Recirculation zones were also found near the toe and in the proximal outer wall of the by-pass tube. Their sizes were about one diameter of the tube or smaller. In some cases, pairing vortices could be seen in the host tube upstream of the occlusion. The shear rate distribution associated with the flow fields was presented. The flow pattern obtained was agreeable to those observed experimentally by other investigators. The difference of the flow fields between a complete bypass and simple anastomosis was discussed. The present numerical code provides a preliminary simulation/design tool for bypass graft flows." @default.
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- W1976230170 date "2001-11-01" @default.
- W1976230170 modified "2023-09-27" @default.
- W1976230170 title "A numerical simulation of steady flow fields in a bypass tube" @default.
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- W1976230170 doi "https://doi.org/10.1016/s0021-9290(01)00131-2" @default.
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