A numerical investigation of Newtonian/non-Newtonian unsteady pulsatile entry blood flow inside a 3D curved stenosed artery is presented. For considering the non-Newtonian effect (shear thinning or shear thickening behavior), the blood viscosity is characterized by the power-law model (Ostwald de Waele Equation). At the inlet of the artery, a realistic pulsatile waveform is utilized according to the experimental data reported by other researchers. This study belongs to the analysis of the curvature ratios, percentage and length ratio of stenosis, and blood thickening on hemodynamic characteristics of the flow. The results emphasize that the maximum wall shear stress happens near the stenosis neck and as expected, by decreasing the stenosis length, the maximum value of wall shear stress increases. In addition, the results indicate that the shear thickening fluid shows a more stable velocity profile rather than the shear thinning fluid flow.

中文翻译：

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不稳定的脉动牛顿/非牛顿血流通过弯曲的狭窄动脉的数值研究。

提出了牛顿/非牛顿非稳态脉动进入血流在3D弯曲狭窄动脉内的数值研究。为了考虑非牛顿效应（剪切稀化或剪切增稠行为），通过幂律模型（Ostwald de Waele方程）来表征血液粘度。根据其他研究人员报告的实验数据，在动脉入口处使用了真实的脉动波形。该研究属于分析曲率比，狭窄百分比和长度比以及血液增稠对血流动力学特性的影响。结果强调，最大的壁切应力发生在狭窄的颈部附近，并且如预期的那样，通过减小狭窄长度，壁切应力的最大值增加。此外，