Computational Study of Eccentric Stenosis in Carotid Artery with Newtonian and Non-Newtonian Fluid Model

• Main Author: Rahman Alam Aulia, Faisal
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/37943
• Institution: Institut Teknologi Bandung

Carotid arteries are blood vessels that have a function to drain blood to the face and brain. Research shows that carotid sinuses are part of the carotid artery that most often overcomes stenosis or blockage of blood vessels. Other studies also state that most stenosis has an eccentric form, not concentric. The causes and effects of stenosis are related with the nature of the flow. The characteristics of the flow can be identified, one of them is by doing Computational Fluid Dynamic simulations. In this study, Computational Fluid Dynamics simulation was conducted on the carotid artery with Newtonian and non-Newtonian fluid models, namely the Carreau and Power-Law Models. In the modeling stage, 4 geometries were made with different cross-sectional areas on the carotid sinus stenosis. The variation in percent stenosis in the cross-sectional area is 0%, 25%, 50%, and 75%. The final result of this final project is to analyze the behavior of fluid in the blood flow in normal and stenosed carotid arteries, and compare the parameters such as velocity, velocity profile, wall shear stress, and pressure drop on 3 models of viscosity and variations in cross-sectional area. The simulation results show the Newtonian model has a higher average speed, lower WSS, and lower pressure drop compared to the non-Newtonian model. In addition, the stenosis geometry of 75% has the highest average speed, WSS, and pressure drop compared to other geometry models.