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

fYear

2012

fDate

Aug. 28 2012-Sept. 1 2012

Firstpage

653

Lastpage

656

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society (EMBC), 2012 Annual International Conference of the IEEE

Conference_Location

San Diego, CA

ISSN

1557-170X

Print_ISBN

978-1-4244-4119-8

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/EMBC.2012.6346016

Filename

6346016