Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Numerical investigation of hemodynamics patterns after Transcatheter Aortic Valve Replacement (TAVR)
Submission Author:
Diego Celis , RJ
Co-Authors:
Diego Celis, Angela Nieckele, ivan fernney ibanez aguilar, Pedro Nieckele Azevedo, BRUNO AZEVEDO
Presenter: ivan fernney ibanez aguilar
doi://10.26678/ABCM.COBEM2017.COB17-0512
Abstract
Transcatheter Aortic Valve Replacement (TAVR) has become a powerful alternative for patients with aortic stenosis and a high risk to face a traditional open chest surgery. The objective of the research was to analyze, using Computational Fluid Dynamics (CFD), the hemodynamic effects caused in the aorta by the inclination of the prosthetic valve orifice in its final positioning. The study was carried out on the basis of a particular patient who was undergoing to TAVR. A 3D model was generated from computed tomography angiography and image segmentation of the aorta. To represent a pulsatile flow, different mass flow rates were imposed at the inlet valve. The turbulence was modeled with the two-equation SST model. The influence of small variation of tilt angles of the inlet flow on the velocity and pressure fields are discussed. It is shown that small variation of the tilt angles can significantly modify the nature of the flow, displacing the location of vortices and altering the location and value of the highest values of pressure.
Keywords
Transcatheter Aortic Valve Replacement, Turbulence, CFD, Hemodynamic, WSS
