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Analysis of fluid-structure interaction in abdominal aortic aneurysm with high and normal blood pressure

Giuma, Badreddin and Osman, Kahar and Abdul Kadir, Mohamed Rafiq (2009) Analysis of fluid-structure interaction in abdominal aortic aneurysm with high and normal blood pressure. In: South East Asian Technical Universities Consortium(SEATUC) - 3rd SEATUC Symposium Proceeding, 25th - 26th February 2009, Johor Bahru, Malaysia.

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Abstract

In this study, we investigate the behavior of the pulsatile blood flow in an actual Abdominal Aortic Aneurysm derived from the computed tomography (CT) scan images. The human blood is assumed to behave as non-Newtonian fluid. Fluid-structure interaction (FSI) technique was used to predict the displacement and stresses on the wall. The objective of this work is to study the effect of hypertensive blood pressure and the wall shear stress (WSS) since hypertension is reported to be a risk factor in rupture of aneurysms. The numerical prediction shows that the transient behavior of t~c interaction under hypertensive blood pressure IS significantly different from that under normal blood pressure. The peak wall stress, peak WSS and peak deformation occur shortly after systolic peak pressure. The location of maximum WSS is not where the pressure is the highest but rather where the pressure gradient is the largest.

Item Type:Conference or Workshop Item (Paper)
Additional Information:ISSN : 1882-5796, Hybrid Twinning Program 2008
Uncontrolled Keywords:fluid-structure interaction, abdominal aortic aneurysm, blood pressure
Subjects:R Medicine > RZ Other systems of medicine
T Technology > TJ Mechanical engineering and machinery
Divisions:?? FBSK ??
ID Code:12454
Deposited By: Ms Zalinda Shuratman
Deposited On:01 Jun 2011 10:17
Last Modified:01 Jun 2011 10:17

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