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International Journal of Fluid Mechanics Research
ESCI SJR: 0.22 SNIP: 0.446 CiteScore™: 0.5

ISSN Print: 2152-5102
ISSN Online: 2152-5110

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v41.i5.30
pages 417-429

Laminar Blood Flow through a Model of Arterial Stenosis with Oscillating Wall

Mir Golam Rabby
School of Engineering & Applied Science, Dept. of Electrical & Computer Engineering, North South University Dhaka-1229, Bangladesh
Rumia Sultana
School of Engineering & Applied Science, Dept. of Electrical & Computer Engineering, North South University Dhaka-1229, Bangladesh
Sumaia Parveen Shupti
School of Engineering & Applied Science, Dept. of Electrical & Computer Engineering, North South University Dhaka-1229, Bangladesh
Md. Mamun Molla
School of Engineering & Applied Science, Dept. of Electrical & Computer Engineering, North South University Dhaka-1229, Bangladesh

ABSTRACT

In this research, a numerical investigation of the physics of laminar blood flow through a two-dimensional (2D) pipe with an idealized stenosis with oscillating wall has been studied using the finite volume method. The governing Navier − Stokes equations are modified using the time dependent Cartesian curvilinear coordinates to handle the complex geometry, such as, arterial stenosis. The arterial wall is considered as moving sinusoidally in a radial direction. The computations for this case were carried out for a range of Reynolds number and amplitude of the wall oscillation. The flow is characterized by the Reynolds number, ranging from 100 to 300. The numerical results are presented in terms of the velocity, pressure distribution, wall shear stress as well as the vorticity, streamlines and vector plot indicating the recirculation zones at the post stenotic region. Due to the higher Reynolds number pressure drop is higher after the throat location of stenosis and wall shear stress is maximal at the center of the stenosis.


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