@article{Tan:2009,
author = {Tan, FPP and Torii, R and Borghi, A and Mohiaddin, RH and Wood, NB and Xu, XY},
journal = {International Journal of Applied Mechanics},
pages = {179--199},
title = {Fluid-structure interaction analysis of wall stress and flow patterns in a thoracic aortic aneurysm},
volume = {1},
year = {2009}
}

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TY  - JOUR
AB  - In this study, fluid-structure interaction (FSI) simulation was carried out to predict wall  shear stress (WSS) and blood flow patterns in a thoracic aortic aneurysm (TAA) where  haemodynamic stresses on the diseased aortic wall are thought to lead to the growth,  progression and rupture of the aneurysm. Based on MR images, a patient-specific TAA  model was reconstructed. A newly developed two-equation laminar-turbulent transitional  model was employed and realistic velocity and pressure waveforms were used as boundary  conditions. Analysis of results include turbulence intensity, wall displacement, WSS, wall  tensile stress and comparison of velocity profiles between MRI data, rigid and FSI simulations.  Velocity profiles demonstrated that the FSI simulation gave better agreement  with the MRI data while results for the time-averaged WSS (TAWSS) and oscillatory  shear index (OSI) distributions showed no qualitative differences between the simulations.  With the FSI model, the maximum TAWSS value was 13% lower, whereas the  turbulence intensity was significantly higher than the rigid model. The FSI simulation  also provided results for wall mechanical stress in terms of von Mises stress, allowing  regions of high wall stress to be identified.
AU  - Tan,FPP
AU  - Torii,R
AU  - Borghi,A
AU  - Mohiaddin,RH
AU  - Wood,NB
AU  - Xu,XY
EP  - 199
PY  - 2009///
SP  - 179
TI  - Fluid-structure interaction analysis of wall stress and flow patterns in a thoracic aortic aneurysm
T2  - International Journal of Applied Mechanics
VL  - 1
ER  - 

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