Fluid-structure interaction analysis on the effects of vessel material properties on blood flow characteristics in stenosed arteries under axial rotation

Cho, Seong-Wook; Kim, Seung-Wook; Sung, Moon-Hyun; Ro, Kyoung-Chul; Ryou, Hong-Sun

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자료유형: 학술저널

저자정보: Cho, Seong-Wook (School of Mechanical Engineering, Chung-Ang University) Kim, Seung-Wook (School of Mechanical Engineering, Chung-Ang University) Sung, Moon-Hyun (School of Mechanical Engineering, Chung-Ang University) Ro, Kyoung-Chul (School of Mechanical Engineering, Chung-Ang University) Ryou, Hong-Sun (School of Mechanical Engineering, Chung-Ang University)

저널정보: 한국유변학회 Korea-Australia rheology journal Korea-Australia rheology journal 제23권 제1호

발행연도: 2011.1

수록면: 7 - 16 (10page)

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연구주제

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연구배경

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연구방법

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We conducted blood flow analysis, using the Fluid-Structure Interaction (FSI) method, to examine how changes in the material properties of blood vessels affect blood flow characteristics, using the carotid artery as the model vessel. The geometry of the blood vessel included 50% stenosis at the center, and blood was modeled as a non-Newtonian fluid. In order to investigate the effects of vessel material properties, linear elastic models with 0.21 MPa, 0.51 MPa, and 1.25 MPa, which are within the typical elastic modulus range of the carotid artery, were used to simulate the blood vessel, and these were compared with the rigid body model. The difference in blood vessel elasticity caused periodic and transient changes in blood flow. The more elastic the blood vessel becomes, the longer the periods of velocity, pressure, and Wall Shear Stress (WSS) change and the smaller the size of the Fluid Recirculation Zone (FRZ). Also, transient changes in blood flow occurred due to the accumulation of differences in flow caused by vessel wall deformation. This is because a change in the stiffness of the vessel wall causes the vessel's vibration period to change, leading to changes in blood flow.

#FSI #elastic modulus #vessel property #blood flow #stenosis #carotid artery

참고문헌 (30)

참고문헌 신청

Bathe, K. J / 2004 / Finite element developments for general fluid flows with structural interactions / Int. J. Numer. Meth. Eng 60:213~232

Bella J. N. / 1999 / Assessment of arterial compliance by carotid midwall strain-stress relation in normotensive adults / Hypertension 33:787~792

Caro, C. G. / 1974 / Mechanics of the circulation. in cardiovascular physiology, Chapter 1 / Medical and Technical Publishers

Cho, Y. I. / 1985 / Experimenta investigation of branch flow ratio, angle, and Reynolds number effects on the pressure and flow fields in arterial branch models / J. Biomech. Eng.-Trans. ASME 107:257~267

Figueroa, C. A. / 2006 / A coupled momentum method for modeling blood flow in three-dimensional deformable arteries / Comput. Methods Appl. Mech. Eng 195:5685~8706