Two and Three Dimensional Blood Flow Simulations in Different Types of Blood Vessels

• Main Authors: Balazs ALBERT, Vitalie VACARAS, Titus PETRILA
• Format: Article
• Language: English
• Published: National Institute for Aerospace Research “Elie Carafoli” - INCAS 2015-12-01
• Series: INCAS Bulletin
• Subjects: non-Newtonian model for blood flows; abdominal aortic aneurysm; stenosis; Fahraeus-Lindqvist effect
• Online Access: http://bulletin.incas.ro/files/albert__vacaras__petrila_vol_7_iss_4.pdf

In this paper we present a synthesis of our results obtained on blood flow simulation in different types of blood vessels. We present first some remarks on the wall shear stress (WSS) in the case of a human abdominal aortic aneurysm (AAA), and then we concentrate on the mechanical conditions which would lead to the “rupture” of the vascular vessel with aneurysm and implicitly to a possible stroke. We also make some investigations on the Fahraeus-Lindqvist effect in arterioles. Considering an axial-symmetric reservoir full of blood and which is linked to an arteriole (with the same particular geometry), we have pointed out the concentration of the red blood cells in this arteriole towards the core of the vessel. To improve our work we have considered a real three-dimensional geometry, which is a serious jump versus our previous results, where only the axial-symmetric geometries were considered. In this respect we have reconsidered the case of a carotid artery stenosis with and without a stent.