Universal Journal of Mechanical Engineering Vol. 1(3), pp. 98 - 107
DOI: 10.13189/ujme.2013.010304
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Pulsatile Laminar Flows in a Dilated Channel Using Cartesian Curvilinear Coordinates


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

ABSTRACT

In this paper, numerical simulation has been performed to study the flow behavior of a pulsatile Newtonian fluid confined within a two-dimensional (2D) channel with an asymmetric shaped aneurysm using the finite volume method. The governing Navier- Stokes equations have been modified using the Cartesian curvilinear coordinates to handle complex geometries. The investigation have been carried out to characterize the blood flow for Reynolds number 100, 300 and 500 which is suitable for human artery. The numerical results are represented here in terms of velocity, pressure distribution, wall shear stress as well as the streamlines indicating the recirculation zones inside the dilated region. The results of this study demonstrate a lower centerline velocity inside the aneurysm but comparatively higher wall pressure and wall shear stress at the distal neck of the aneurysm. Furthermore, all three Reynolds numbers show the presence of vortex inside the bulge.

KEYWORDS
Aneurysm, finite volume method, laminar pulsatile flow, wall shear stress, recirculation zone

Cite this paper
Sumaia Parveen Shupti , Rumia Sultana , Mir Golam Rabby , Md. Mamun Molla . "Pulsatile Laminar Flows in a Dilated Channel Using Cartesian Curvilinear Coordinates." Universal Journal of Mechanical Engineering 1.3 (2013) 98 - 107. doi: 10.13189/ujme.2013.010304.