The flow structure in a three-dimensional Model of abdominal aortic bifurcation: ultrasonic and numerical study

A numerical and experimental research of fluid flow structure on a model involving statistical-average bifurcations of the abdominal aorta and iliac arteries with an axisymmetric stenosis in the right common iliac artery has been conducted. It was shown that a two-vortex flow formed in the external...

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Published inSt. Petersburg Polytechnical University Journal. Physics and Mathematics Vol. 12; no. 4
Main Authors Sinitsyna Daria, Yukhnev Andrey, Zaitsev Dmitrii, Turkina Maria
Format Journal Article
LanguageEnglish
Published Peter the Great St.Petersburg Polytechnic University 01.12.2019
Subjects
abdominal aorta’s bifurcation
spatial bending of vessel
stenosis
ultrasound doppler method
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Summary:A numerical and experimental research of fluid flow structure on a model involving statistical-average bifurcations of the abdominal aorta and iliac arteries with an axisymmetric stenosis in the right common iliac artery has been conducted. It was shown that a two-vortex flow formed in the external iliac artery transforms a downstream into a four-vortex flow. The stenosis in the common iliac artery leads to formation of a recirculation zone behind it, namely, at the inner wall of the vessel. The following spatial bend of the external iliac artery leads to generation of a swirling flow in this vessel. A transitional flow, from a two-vortex to a single-vortex motion, forms in the internal iliac arteries.
ISSN:2405-7223
DOI:10.18721/JPM.12405