title: Unsteady non-Newtonian blood flow through a tapered overlapping stenosed catheterized vessel.
abstract: The unsteady flow characteristics of blood in a catheterized overlapping stenosed artery are analyzed in presence of body acceleration and magnetic field. The stenosed arterial segment is modeled as a rigid constricted tube. An improved shape of stenosis in the realm of the formulation of the arterial narrowing caused by atheroma is integrated in the present study. The catheter inside the artery is approximated by a thin rigid tube of small radius while the streaming blood in the artery is characterized by the Carreau model. Employing mild stenosis condition, the governing equation of the flow is derived which is then solving numerically using finite difference scheme. The variation of axial velocity, flow rate, resistance impendence and wall shear stress is shown graphically for various parameters of interest. The flow patterns illustrating the global behavior of blood are also presented.
authors.affiliation: Department of Mathematics and Statistics, International Islamic University, Islamabad 44000, Pakistan. Electronic address: nasirali_qau@yahoo.com.
authors.forename: N
authors.initials: N
authors.lastname: Ali
authors.affiliation: Department of Mathematics and Statistics, International Islamic University, Islamabad 44000, Pakistan.
authors.forename: A
authors.initials: A
authors.lastname: Zaman
authors.affiliation: Theoretical Physics Division, PINSTECH, P. O. Nilore, Islamabad 44000, Pakistan.
authors.forename: M
authors.initials: M
authors.lastname: Sajid
authors.affiliation: Departamento de Análisis Matemático, Facultad de Matemáticas, Universidad de Santiago de Compostela, 15782, Spain; Faculty of Science, King Abdulaziz University, P.O. Box 80203, 21589 Jeddah, Saudi Arabia.
authors.forename: J J
authors.initials: JJ
authors.lastname: Nieto
authors.affiliation: Departamento de Psiquiatría Radiología y Salud Pública, Facultad de Medicina, Universidad de Santiago de Compostela, 15782, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Torres
mesh_terms: D050197:Atherosclerosis / Q000503:physiopathology*; D003198:Computer Simulation; D006439:Hemodynamics; D018056:Hemorheology; D006801:Humans; D055641:Mathematical Concepts; D008955:Models, Cardiovascular; D011673:Pulsatile Flow
keywords: Body acceleration; Carreau fluid; Catheterized artery; Finite difference method; Magnetic field; Unsteady flow