NUMERICAL SIMULATION OF UNSTEADY BLOOD FLOW THROUGH AN ELASTIC ARTERY WITH A NON-SYMMETRIC STENOSIS

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HAGHIGHI AHMAD REZA; SHAHBAZI ASL MOHAMMAD

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Journal: Modares Mechanical Engineering Year:2014 | Volume:14 | Issue:10 Page(s): 26-34

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Information Journal Paper

Title

NUMERICAL SIMULATION OF UNSTEADY BLOOD FLOW THROUGH AN ELASTIC ARTERY WITH A NON-SYMMETRIC STENOSIS

Author(s)

HAGHIGHI AHMAD REZA | SHAHBAZI ASL MOHAMMAD | Issue Writer Certificate

Keywords

STENOSISQ1

BLOOD FLOWQ2

FINITE DIFFERENCE SCHEMEQ2

NEWTONIAN FLUIDQ1

MICROPOLAR FLUIDQ2

Abstract

In the present study the problem of a two-layered model for an unsteady and pulsatile flow of blood through a stenosed artery is numerically simulated. The model consists of a core layer of suspension of erythrocytes and a peripheral plasma layer. The core is assumed to be represented using a MICROPOLAR FLUID and the plasma layer using a NEWTONIAN FLUID. The artery is considered to be elastic and the geometry of the STENOSIS is taken as time-dependent, however, a comparison has been made with the rigid ones. The shape of the STENOSIS in the arterial lumen is chosen to be axially non-symmetric but radially symmetric in order to improve resemblance to the in-vivo situations. By applying a suitable coordinate transformation, the stenosed artery turns into a rectangular and rigid artery. The Navier-Stokes equations of motion of the BLOOD FLOW, subjected to a pulsatile pressure gradient are solved numerically using the FINITE DIFFERENCE SCHEME. Dynamical characteristics of the BLOOD FLOW such as the velocity profile, the volumetric flow rate and the resistances to flow are obtained and the effects of the wall motion and the severity of the STENOSIS on these flow characteristics are discussed. The results are found to be in good agreement with the available analytical results.

Cites

A NON-NEWTONIAN MODEL OF PULSATILE BLOOD FLOW THROUGH ELASTIC ARTERY WITH OVERLAPPING STENOSIS

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APA: Copy

HAGHIGHI, AHMAD REZA, & SHAHBAZI ASL, MOHAMMAD. (2014). NUMERICAL SIMULATION OF UNSTEADY BLOOD FLOW THROUGH AN ELASTIC ARTERY WITH A NON-SYMMETRIC STENOSIS. MODARES MECHANICAL ENGINEERING, 14(10), 26-34. SID. https://sid.ir/paper/177817/en

Vancouver: Copy

HAGHIGHI AHMAD REZA, SHAHBAZI ASL MOHAMMAD. NUMERICAL SIMULATION OF UNSTEADY BLOOD FLOW THROUGH AN ELASTIC ARTERY WITH A NON-SYMMETRIC STENOSIS. MODARES MECHANICAL ENGINEERING[Internet]. 2014;14(10):26-34. Available from: https://sid.ir/paper/177817/en

IEEE: Copy

AHMAD REZA HAGHIGHI, and MOHAMMAD SHAHBAZI ASL, “NUMERICAL SIMULATION OF UNSTEADY BLOOD FLOW THROUGH AN ELASTIC ARTERY WITH A NON-SYMMETRIC STENOSIS,” MODARES MECHANICAL ENGINEERING, vol. 14, no. 10, pp. 26–34, 2014, [Online]. Available: https://sid.ir/paper/177817/en

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