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020 _aTHE0005684(Local)
039 9 _a201905211123
_bhanafiah
_c201107132322
_dVLOAD
_c201007141619
_dFida
_y201005311018
_zFida
040 _aUMP
090 _aTA357.5 .S53 2009 rs Bc.
100 0 _aShamsul Aliff Mohd
245 1 0 _aAnalysis of flow phenomena in stented cerebral aneurysms /
_cShamsul Aliff Bin Mohd
246 3 _aAnalysis of flow phenomena in stented cerebral aneurysms
_h[electronic resource]
260 _aKuantan, Pahang :
_bUMP,
_c2009
300 _axiv, 79 p. :
_bill. (some col.) ;
_c30 cm. +
_e1 computer disc
502 _aProject paper (Bachelor of Mechanical Engineering) -- Universiti Malaysia Pahang - 2009
504 _aBibliography : p. 60-63
520 3 _aInvestigation 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, non-Newtonian, viscous, non pulsatile condition in which we investigated computationally in a three-dimensional 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 non-stented 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 non-stented aneurysms is 453 Pa and for stented is 422 Pa. While, in second model, for non-stented 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.
650 0 _aAneurysms
650 0 _aIntracranial aneurysms
650 0 _aFluid dynamics
999 _aVIRTUA40
_c1893
_d1899
999 _aVTLSSORT0080*0200*0400*0900*1000*2450*2460*2600*3000*5020*5040*5200*6500*6501*6502*9992