Computational investigation of pulsatile blood flow in the models of arterial stenosis and aneurysm

Miah, Md. Abdul Karim

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dc.contributor.author	Miah, Md. Abdul Karim
dc.date.accessioned	2021-08-12T10:01:31Z
dc.date.available	2021-08-12T10:01:31Z
dc.date.issued	2018-03-30
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Tsangaris, Flow effects of blood constitutive equations in 3D models of vascular anomalies. International journal for numerical methods in fluids, 2006. 51(5): p. 489-510. 33. Tu, C. and M. Deville, Pulsatile flow of non-Newtonian fluids through arterial stenoses. Journal of biomechanics, 1996. 29(7): p. 899-908. 34. Zendehbudi, G. and M. Moayeri, Comparison of physiological and simple pulsatile flows through stenosed arteries. Journal of Biomechanics, 1999. 32(9): p. 959-965. 35. Kumar, B.R. and K. Naidu, Finite element analysis of nonlinear pulsatile suspension flow dynamics in blood vessels with aneurysm. Computers in biology and medicine, 1995. 25(1): p. 1-20. 36. Husain, I., C. Langdon, and J. Schwark, Non-Newtonian pulsatile blood flow in a modeled artery with a stenosis and an aneurysm. Rec. Res. Envi. Geo. Sc: p. 413-418. 37. Gopalakrishnan, S.S., B. Pier, and A. Biesheuvel, Dynamics of pulsatile flow through model abdominal aortic aneurysms. Journal of Fluid Mechanics, 2014. 758: p. 150-179. 38. Finol, E., K. Keyhani, and C. Amon, The effect of asymmetry in abdominal aortic aneurysms under physiologically realistic pulsatile flow conditions. Journal of biomechanical engineering, 2003. 125(2): p. 207-217.	en_US
dc.identifier.uri	http://hdl.handle.net/123456789/822
dc.description	Supervised by Dr. Nurul Absar Chowdhury, Professor, Department of Mechanical & Chemical Engineering (MCE), Islamic University of Technology (IUT), OIC, Board Bazar, Gazipur, Dhaka, Bangladesh.	en_US
dc.description.abstract	A numerical analysis based on a finite volume approach is employed for a 2-D axisymmetric, incompressible, laminar flow of mean Reynolds number of 578 so as to simulate and compare the pulsatile blood flow in the models of arterial stenosis and aneurysm of the same sizes. Radial velocity distribution and Wall Shear Stress Distribution have been taken as the two key parameters for analyzing and comparing stenosis and aneurysm of the same sizes of 32% and 48% severity. These parameters have been compared using unsteady blood flow of two frequencies: Womersley number of 7.75 and 10. In addition, the extent of the effect of Womersley number has been discussed. A flow input waveform is presented in terms of sinusoid. The results implicate that the Womersley number has a little effect on the flow field when the sizes were varied, which indicates the dominance of viscous force on the flow field of the models considered. It has been observed that the size or the severity of the stenosis or aneurysm has great effect on the flow field and Wall Shear Stress effect is too high in the stenosis compared to that in aneurysm. It has been concluded too that, for a particular depth of stenosis and aneurysm, with the same flow inputs, WSS is too high in the stenosis compared to that in aneurysm indicating very high risk in stenosis	en_US
dc.language.iso	en	en_US
dc.publisher	Department of Mechanical and Production Engineering (MPE),Islamic University of Technology(IUT), Board Bazar, Gazipur, Bangladesh	en_US
dc.title	Computational investigation of pulsatile blood flow in the models of arterial stenosis and aneurysm	en_US
dc.type	Thesis	en_US