论文标题
在稳定流动条件下颈动脉分叉模型中的计算流体动力学模拟
Computational Fluid Dynamic Simulations In a Model of a Carotid Bifurcation Under Steady Flow Conditions
论文作者
论文摘要
中风仍然是世界各地心脏病和癌症后死亡的主要原因之一。大多数中风之所以发生，是因为将血液从心脏到头部上山的动脉堵塞。在大多数情况下，与心脏病发作一样，问题是动脉粥样硬化，动脉硬化，钙化在容器壁上的脂肪沉积物的积累。主要的麻烦制造者是颈动脉，颈部的每一侧是一个颈动脉，是大脑血液的主要通道。但是，只有在过去的25年中，研究人员才能够指出为什么颈动脉特别容易受到动脉粥样硬化的影响。在这项研究中，在计算稳定的流动条件下，在颈动脉分叉中进行了流体动力学模拟。体内几何形状和边界条件是从颈动脉患者中狭窄两侧的患病中获得的。检测到临界流场（例如低壁剪应力（WSS），停滞区和分离区域）的位置。在分叉的下游发现低WSS。
Strokes are still one of the leading causes for death after heart diseases and cancer in all over the world. Most strokes happen because an artery that carries blood uphill from the heart to the head gets clogged. Most of the time, as with heart attacks, the problem is atherosclerosis, hardening of the arteries, calcified buildup of fatty deposits on the vessel wall. The primary troublemaker is the carotid artery, one on each side of the neck, the main thoroughfare for blood to the brain. Only within the last 25 years, though, have researchers been able to put their finger on why the carotid is especially susceptible to atherosclerosis. In this study, the fluid dynamic simulations were done in a carotid bifurcation under the steady flow conditions computationally. In vivo geometry and boundary conditions were obtained from a diseased who has both sides of stenosis located in his carotid artery patients. The location of critical flow fields such as low wall shear stress (WSS), stagnation regions and separation regions were detected. Low WSS was found at the downstream of the bifurcation.
