Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Elastic Motion of the Blood Vessel and Wall Shear Stress in Carotid Artery with Stenosis

협착된 경동맥 내의 벽전단응력 및 혈관의 탄성적 거동

  • 김창녕 (경희대학교 기계,산업시스템공학부) ;
  • 오택열 (경희대학교 기계,산업시스템 공학부) ;
  • 최명진 (경희대학교 기계,산업시스템 공학부) ;
  • 정삼두 (경희대학교 기계공학과)
  • Published : 2005.09.01
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Abstract

The characteristics of blood flow and the interaction between the blood vessel and blood flow play important roles in plaque cap rupture and the growth of atherosclerosis which may lead directly to a heart attack or a stroke. In this study, carotid arteries with different stenoses have been numerically simulated to investigate the wall shear stress(WSS) and the elastic motion of the vessel. Blood flow has been treated as physiological, laminar and incompressible flow. To model the shear thining behavior of the blood, the Carreau-Yasuda model has been employed but the viscoelasticity of blood has not been considered. The results show that the WSS of $severe(75\%)$ stenosis is much higher than those of $25\%\;and\;50\%$ stenosis in the region of stenosis. With the increase in the stenosis thickness, the expansion ratio of the center of the stenosis decreases while the expansion ratio of the upstream region of the stenosis increases.

Keywords

References

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