了解动脉中(尤其是动脉分叉处)的流动状况对于探讨动脉粥状硬化的起因和诊断动脉病变是非常重要的。本文用部分扩张(代表颈动脉窦)的二维刚性模型来模拟几何形状高度非对称的颈动脉分叉。一方面利用激光多普勒风速仪测量模型中的轴向速度,另一方面从 Navier-Stokes 方程组的有限元近似出发进行数值模拟。所得的数值和实验结果非常符合。研究结果表明,分叉几乎不影响上游主干(颈总动脉) Understanding the flow in the arteries, especially at the bifurcation of the arteries, is important to explore the causes of atherosclerosis and to diagnose arterial disease. In this paper, a two-dimensional rigid model partially expanded (representing the carotid sinus) was used to simulate a highly asymmetric carotid bifurcation. On the one hand, the laser Doppler anemometer is used to measure the axial velocity in the model. On the other hand, numerical simulation is carried out from the finite element approximation of the Navier-Stokes equations. The obtained values ​​are in good agreement with the experimental results. The results show that the bifurcation almost does not affect the upstream trunk (common carotid artery)