| Fluid–Structure Interaction Analysis of Hemodynamics and Plaque Vulnerability in a Stenosed Carotid Artery |
| کد مقاله : 1665-ISME2026 |
| نویسندگان |
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محمدجواد جعفری *1، نگار نباتیان2، محمدتقی احمدیان3 1دانشجوی دکترا 2استادیار 3استادتمام |
| چکیده مقاله |
| The carotid arteries supply oxygenated blood from the heart to the brain. Atherosclerotic plaque formation within these arteries can narrow the lumen and reduce cerebral blood flow, which is a major cause of ischemic stroke and stroke-related death worldwide. Understanding the mechanical and hemodynamic changes caused by stenosis is therefore essential. This study investigates the hemodynamics of healthy and stenosed carotid arteries using a fully coupled fluid–structure interaction (FSI) framework to capture the interaction between pulsatile blood flow and arterial wall deformation. Key hemodynamic parameters, including velocity distribution, mass flowrate, vorticity and wall shear stress (WSS), were systematically evaluated. Blood was modeled as a Newtonian fluid, and the arterial wall was represented as a linear isotropic elastic material. An idealized plaque located at the carotid bulb produced approximately 45% luminal stenosis to Results indicate that a 45% occlusion in the internal carotid artery (ICA) reduces the ICA mass flow rate by 5.02% while increasing flow through the external carotid artery (ECA) by 13.22%. Analysis of wall shear stress (WSS) contours during systole and diastole highlights regions most susceptible to plaque formation. When combined with vorticity contours, these maps identify areas of recirculating flow where blood components interact, promoting the accumulation of pre-plaque material. Furthermore, examination of the maximum WSS in the stenosed vessel allows identification of the most likely plaque rupture site. |
| کلیدواژه ها |
| Carotid artery stenosis; Fluid–structure interaction; Wall shear stress; Vorticity; |
| وضعیت: پذیرفته شده برای ارائه شفاهی |