NUMERICAL SIMULATION OF UNSTEADY BLOOD FLOW WITH NEWTONIAN AND NON-NEWTONIAN BEHAVIOR THROUGH AN STENOSED ARTERY

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TAVAKOLI GOLPAYEGANI A.; NAJARIAN S.; FIROUZI FARAMARZ

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Journal: DANESHVAR MEDICINE Year:2003 | Volume:11 | Issue:47 Page(s): 23-28

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Title

NUMERICAL SIMULATION OF UNSTEADY BLOOD FLOW WITH NEWTONIAN AND NON-NEWTONIAN BEHAVIOR THROUGH AN STENOSED ARTERY

Author(s)

TAVAKOLI GOLPAYEGANI A. | NAJARIAN S. | FIROUZI FARAMARZ | Issue Writer Certificate

Keywords

UNSTEADY FLOWQ4

NON-NEWTONIAN FLUIDQ4

SEVERITY OF STANCESQ4

WALL SHEAR STRESSQ4

Abstract

There is considerable evidence that vascular fluid dynamics play an important role in the development and prevalence of atherosclerosis, which is one of the most widespread diseases in human beings. Hemodynamics parameters, which are involved in the onset and prevalence of this disease, are largely affected by geometric factors.Most of the arterial diseases, such as atherosclerosis, occur in the arteries with complex pattern of fluid flow. Research shows that arterial stenosis (AS) occurs more frequently in Coronary artery, Aorta bifurcation, Carotid artery, and vessels of lower limbs. During the past two decades, many experimental studies have been done in order to understand the importance of the blood hemodynamic parameters in forming sedimentation on the inner wall of blood vessels. It has been determined that this phenomenon depends on both fluid velocity and WALL SHEAR STRESS. In the present study, the effect of the local stenosis in Carotid artery has been investigated using numerical solution of incompressible Navier-Stokes equations for both Newtonian and non-Newtonian flows. Among various parameters that have been investigated velocity profile has been shown in different parts and times in a pulsatile cycle, separation and reattachment points on the wall, flow stability length and the variation of WALL SHEAR STRESS over the whole length of blood vessel. Finally we compare the influence of the severity of the stenosis on the separation and reattachment points for a Newtonian and a NON-NEWTONIAN FLUID.

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APA: Copy

TAVAKOLI GOLPAYEGANI, A., NAJARIAN, S., & FIROUZI, FARAMARZ. (2003). NUMERICAL SIMULATION OF UNSTEADY BLOOD FLOW WITH NEWTONIAN AND NON-NEWTONIAN BEHAVIOR THROUGH AN STENOSED ARTERY. DANESHVAR MEDICINE, 11(47), 23-28. SID. https://sid.ir/paper/30664/en

Vancouver: Copy

TAVAKOLI GOLPAYEGANI A., NAJARIAN S., FIROUZI FARAMARZ. NUMERICAL SIMULATION OF UNSTEADY BLOOD FLOW WITH NEWTONIAN AND NON-NEWTONIAN BEHAVIOR THROUGH AN STENOSED ARTERY. DANESHVAR MEDICINE[Internet]. 2003;11(47):23-28. Available from: https://sid.ir/paper/30664/en

IEEE: Copy

A. TAVAKOLI GOLPAYEGANI, S. NAJARIAN, and FARAMARZ FIROUZI, “NUMERICAL SIMULATION OF UNSTEADY BLOOD FLOW WITH NEWTONIAN AND NON-NEWTONIAN BEHAVIOR THROUGH AN STENOSED ARTERY,” DANESHVAR MEDICINE, vol. 11, no. 47, pp. 23–28, 2003, [Online]. Available: https://sid.ir/paper/30664/en

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