Pulsatile spiral blood flow through arterial stenosis
نویسندگان
چکیده
منابع مشابه
Newtonian and Non-Newtonian Blood Flow Simulation after Arterial Stenosis- Steady State and Pulsatile Approaches
Arterial stenosis, for example Atherosclerosis, is one of the most serious forms of arterial disease in the formation of which hemodynamic factors play a significant role. In the present study, a 3-D rigid carotid artery with axisymmetric stenosis with 75% reduction in cross-sectional area is considered. Laminar blood flow is assumed to have both Newtonian and non-Newtonian behavior (generalize...
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In this paper hemodynamic wall parameters which play an important role to diagnose arterial disease were studied and compared for three different rheology models (Newtonian, Power law and Quemada). Also because of the pulsatile behavior of blood flow the results were obtained for three Womersley numbers which represent the frequencies of the applied pulses. Results show that Quemada model alway...
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The effects of an overlapping stenosis on blood flow characteristics in a narrow artery have been investigated. To account for the non-Newtonian behavior, blood has been represented by a Casson fluid. The equation describing the flow has been solved and the expressions for the flow characteristics, namely, the impedance, the wall shear stress, the shear stress at the stenosis throats and the sh...
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This model is designed to investigate with a non-Newtonian arterial blood flow model through multiple stenosis. It has been developed in order to expression for pressure gradient along the length of the tube for different hematocrit of red cell. This work shows the combined role played by the geometry and the material non-linearity on the flow field. Thus, the present research is able to predic...
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A mathematical model of unsteady non-Newtonian blood flow in an artery under stenotic condition has been developed. The flowing blood is considered to be a viscoelastic fluid characterized by the Oldroyd-B model and the arterial wall is considered to be rigid, having cosine-shaped stenosis. The governing equations of motion accompanied by appropriate choice of the initial and boundary condition...
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ژورنال
عنوان ژورنال: Computer Methods in Biomechanics and Biomedical Engineering
سال: 2013
ISSN: 1025-5842,1476-8259
DOI: 10.1080/10255842.2013.765411