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Información tecnológica

On-line version ISSN 0718-0764

Abstract

VALENCIA, Alvaro; FIGUEROA, Hernan; RIVERA, Rodrigo  and  BRAVO, Eduardo. Sensibility Analysis in Computational Fluid Dynamics of Cerebral Aneurysm including Fluid Structure Interaction. Inf. tecnol. [online]. 2010, vol.21, n.5, pp.27-38. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642010000500005.

A sensitivity study of the results provided by computational fluid dynamics (CFD) in models of cerebral aneurysms including fluid structure interaction (FSI) was performed. With 83 reconstructed models of cerebral aneurysms, a geometrical study was done and one case was selected for a detailed study of the computational fluid dynamics. In this model the number of carotid siphon used for the CFD simulations was varied. In the FSI study, five simulations were conducted varying the elastic modulus of the artery and the arterial wall thickness, and the effect of hypertension on the results was reported. The FSI simulations have shown that the most important parameter that affeets the aneurysm wall stress state is the arterial hypertension with máximum stress of around 900 kPa. It is concluded that FSI simulations must be used to simultaneously determine the wall stress and the fluid dynamics inside cerebral aneurysm.

Keywords : computational fluid dynamics; cerebral aneurysm; hypertension; CFD; FSI.

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