Shamsul Aliff, Mohd (2009) Analysis of flow phenomena in stented cerebral aneurysms. Faculty of Mechanical Engineering, Universiti Malaysia Pahang.

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Abstract
Investigation on the changes of flow phenomena in saccular aneurysms at the Cerebral had been studied. Due to the aneurysms, the stent placement was done to prevent the rupture of aneurysms. The velocity profile and pressure distribution after and before installing the stent had been identified at the different locations of aneurysms. For each location, there is three cases with the different size of aneurysms that are 3.5 mm, 4.5 mm and 5.5 mm in radius. To identify the changes in local hemodynamic due to stent implantation, stented and non stented aneurysm models using selected stent were taken into considerations. The simulation of the model was studied under incompressible, nonNewtonian, viscous, non pulsatile condition in which we investigated computationally in a threedimensional configuration using a Computational Fluid Dynamics (CFD) program. The minimum velocity had obtained after stents placement. In the first model, the minimum velocity obtained for non stented is 0.374 m/s for case 1, 0.421 m/s for case 2 and 0.36 m/s for case 3. After stenting implementation, the higher minimum velocity were increased for all cases. For case 1 is 0.416 m/s, case 2 is 0.443 m/s and case 3 is 0.404 m/s. In the second model, the minimum velocity for nonstented aneurysms is 0.487 m/s for case 1, 0.424 m/s and 0.343 m/s for case 3. After stenting, the velocity also increased. For case 1 is 0.495 m/s, case is 0.454 m/s and case 3 is 0.382 m/s. The different locations of aneurism, will give the different result of velocity profile and pressure distribution. In the first model, the peak pressure for nonstented aneurysms is 453 Pa and for stented is 422 Pa. While, in second model, for nonstented aneurysms, the peak pressure is 455 Pa and 432 Pa for stented aneurysms. Finally, the correlations obtained from this numerical result could be used to investigate the pressure distribution around the diseased segment.
Item Type:  Undergraduates Project Papers 

Additional Information:  Project paper (Bachelor of Mechanical Engineering)  Universiti Malaysia Pahang  2009, SV: Mohamad Mazwan bin Mahat, NO CD: 4442 
Uncontrolled Keywords:  Intracranial aneurysms Fluid dynamics 
Subjects:  T Technology > TA Engineering (General). Civil engineering (General) 
Faculty/Division:  Faculty of Mechanical Engineering 
Depositing User:  Rosfadilla Mohamad Zainun 
Date Deposited:  10 Feb 2011 04:28 
Last Modified:  04 Apr 2023 02:50 
URI:  http://umpir.ump.edu.my/id/eprint/1091 
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