Pulsatile Non-Newtonian Blood Flow through a Model of Arterial Stenosis

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• 作者：Mir Golam Rabby ; Abdur Razzak ; Md. Mamun Molla ; ^{mmamun@northsouth.edu} ; ^{mmamun@gmail.com}
• 关键词：Pulsatile flow ; non-Newtonian blood flow ; arterial stenosis ; finite volume method ; wall shear stress ; pressure drop
• 刊名：Procedia Engineering
• 出版年：2013
• 出版时间：2013
• 年：2013
• 卷：56
• 期：Complete
• 页码：225-231
• 全文大小：310 K

文摘

In this research, we numerically investigate the physics of a pulsatile non-Newtonian flow confined within a two-dimensional (2D) axisymmetric pipe with an idealized stenosis using the finite volume method. The governing Navier-Stokes equations have been modified using the Cartesian curvilinear coordinates to handle the complex geometry, such as, arterial stenosis. The flow is characterized by the Reynolds number at 300 which are appropriate for the large arteries. For the non-Newtonian blood flow, the Cross models is used along the Newtonian model. The numerical results are presented in terms of the velocity, pressure distribution, wall shear stress as well as the streamlines indicating the recirculation zones at the post stenotic region.