The paper presents a study of hemodynamic processes in an artery with stenosis. The Navier–Stokes model and the Carreau model for a non-Newtonian fluid are proposed for computer simulations. Computational experiments were performed using the FlowVision^© software. The results of a test simulation for blood flow in the 2D tube, as well as a simulation for the native artery model, based on medical research data, are presented. The simulation results show that in a native artery with a stenosis, the distribution of blood velocity and viscosity may be asymmetric, and their local values differ significantly from the average values observed in the artery after the presumed revascularization. The results have great potential importance for diagnosing and treating arterial stenosis.

本文介绍了狭窄动脉的血流动力学过程。非牛顿流体的Navier-Stokes模型和Carreau模型被提出用于计算机仿真。使用FlowVision ^©软件进行了计算实验。介绍了基于医学研究数据的2D管中血流测试模拟结果以及自然动脉模型的模拟结果。模拟结果表明，在具有狭窄的天然动脉中，血流速度和粘度的分布可能不对称，并且其局部值与假定的血运重建后在动脉中观察到的平均值明显不同。该结果对诊断和治疗动脉狭窄具有潜在的重要意义。