Title :
Numerical simulations of flow through the aorta using both ideal and realistic geometrical models
Author :
Wan Ab Naim, W.N. ; Ganesan, P. ; Al Abed, Amr ; Lim, Eul-Gyoon
Author_Institution :
Dept. of Biomed. Eng., Univ. of Malaya, Kuala Lumpur, Malaysia
fDate :
Aug. 28 2012-Sept. 1 2012
Abstract :
The effects of curvature and tapering on the flow progression in the aorta were studied using numerical simulations on a realistic geometrical model of the aorta and three different versions of the ideal aorta models. The results showed that tapering increases velocity magnitude and wall shear stress while local curvatures affect the skewness of the velocity profile, the thickness of the boundary layer as well as the recirculation regions. Wall shear stress distribution in the aorta serves as an important determinant in the progression of arterial disease.
Keywords :
computational fluid dynamics; computerised tomography; diseases; flow simulation; haemodynamics; image reconstruction; medical image processing; ANSYS CFD; aorta; arterial disease; blood; boundary layer; flow numerical simulation; flow progression; geometrical model; image reconstruction; recirculation region; segmented CT image; wall shear stress distribution; Biological system modeling; Biomedical imaging; Finite element methods; Geometry; Humans; Numerical models; Stress; Aorta; Aorta, Thoracic; Atherosclerosis; Biomechanical Phenomena; Blood Flow Velocity; Computer Simulation; Hemodynamics; Humans; Imaging, Three-Dimensional; Models, Cardiovascular; Pulsatile Flow;
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2012 Annual International Conference of the IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-4119-8
Electronic_ISBN :
1557-170X
DOI :
10.1109/EMBC.2012.6346016
