Rohit Shenoy, H. N. Abhilash, A. A. Basri, A. Barboza, G. Shenoy B, R. Pai, A. Khader
{"title":"颈动脉系统生物流体动力学的数值研究","authors":"Rohit Shenoy, H. N. Abhilash, A. A. Basri, A. Barboza, G. Shenoy B, R. Pai, A. Khader","doi":"10.56532/mjsat.v2is1.107","DOIUrl":null,"url":null,"abstract":"Computational Fluid Dynamics (CFD) has been largely used in understanding the haemodynamics of the carotid bifurcation system and to visualise the blood flow changes due to the carotid artery geometric variations. Such studies will be helpful in understanding the arterial blood flow behavior and atherosclerosis. The present study focuses on investigation of geometric variable patient-specific healthy carotid bifurcation system under physiological pressure conditions. Unsteady flow simulation is conducted in ANSYS Fluent under the rigid wall and non-Newtonian conditions. The haemodynamic parameters such as pressure, velocity, vorticity, helicity, and time-averaged wall shear stress (TAWSS) were evaluated to visualise and understand flow dynamics at critical zones of bifurcation system. Further, the importance of geometric influence on the bifurcation zone was also investigated, causing significant vortex formation zones. A considerable reduction in velocity and backflow formation was observed, which is responsible for reducing the shear stress. It is also demonstrated that low TAWSS regions surrounding the bifurcation zone are more prone to atherosclerosis development.","PeriodicalId":407405,"journal":{"name":"Malaysian Journal of Science and Advanced Technology","volume":"247 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Study of Bio-Fluid Dynamics in Carotid Artery System Using Numerical Methods\",\"authors\":\"Rohit Shenoy, H. N. Abhilash, A. A. Basri, A. Barboza, G. Shenoy B, R. Pai, A. Khader\",\"doi\":\"10.56532/mjsat.v2is1.107\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Computational Fluid Dynamics (CFD) has been largely used in understanding the haemodynamics of the carotid bifurcation system and to visualise the blood flow changes due to the carotid artery geometric variations. Such studies will be helpful in understanding the arterial blood flow behavior and atherosclerosis. The present study focuses on investigation of geometric variable patient-specific healthy carotid bifurcation system under physiological pressure conditions. Unsteady flow simulation is conducted in ANSYS Fluent under the rigid wall and non-Newtonian conditions. The haemodynamic parameters such as pressure, velocity, vorticity, helicity, and time-averaged wall shear stress (TAWSS) were evaluated to visualise and understand flow dynamics at critical zones of bifurcation system. Further, the importance of geometric influence on the bifurcation zone was also investigated, causing significant vortex formation zones. A considerable reduction in velocity and backflow formation was observed, which is responsible for reducing the shear stress. It is also demonstrated that low TAWSS regions surrounding the bifurcation zone are more prone to atherosclerosis development.\",\"PeriodicalId\":407405,\"journal\":{\"name\":\"Malaysian Journal of Science and Advanced Technology\",\"volume\":\"247 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-03-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Malaysian Journal of Science and Advanced Technology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.56532/mjsat.v2is1.107\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Malaysian Journal of Science and Advanced Technology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.56532/mjsat.v2is1.107","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Study of Bio-Fluid Dynamics in Carotid Artery System Using Numerical Methods
Computational Fluid Dynamics (CFD) has been largely used in understanding the haemodynamics of the carotid bifurcation system and to visualise the blood flow changes due to the carotid artery geometric variations. Such studies will be helpful in understanding the arterial blood flow behavior and atherosclerosis. The present study focuses on investigation of geometric variable patient-specific healthy carotid bifurcation system under physiological pressure conditions. Unsteady flow simulation is conducted in ANSYS Fluent under the rigid wall and non-Newtonian conditions. The haemodynamic parameters such as pressure, velocity, vorticity, helicity, and time-averaged wall shear stress (TAWSS) were evaluated to visualise and understand flow dynamics at critical zones of bifurcation system. Further, the importance of geometric influence on the bifurcation zone was also investigated, causing significant vortex formation zones. A considerable reduction in velocity and backflow formation was observed, which is responsible for reducing the shear stress. It is also demonstrated that low TAWSS regions surrounding the bifurcation zone are more prone to atherosclerosis development.