Key result
A fluid-structure interaction model incorporating viscoelastic wall behavior successfully predicted carotid artery wall displacements, with negligible differences compared to a solid-only model.
A newly developed fluid-structure interaction model accurately predicts the viscoelastic behavior of carotid arteries under pulsatile flow, providing a tool for analyzing realistic arterial geometries.
Advances viscoelastic FSI modeling for carotid arteries; leaves open validation in realistic pathological geometries before clinical use.
In this study, a fluid-structure interaction model (FSI) incorporating viscoelastic wall behaviour is developed and applied to an idealized model of the carotid artery under pulsatile flow. The shear and bulk moduli of the arterial wall are described by Prony series, where the parameters can be derived from in vivo measurements. The aim is to develop a fully coupled FSI model that can be applied to realistic arterial geometries with normal or pathological viscoelastic wall behaviour. Comparisons between the numerical and analytical solutions for wall displacements demonstrate that the coupled model is capable of predicting the viscoelastic behaviour of carotid arteries. Comparisons are also made between the solid only and FSI viscoelastic models, and the results suggest that the difference in radial displacement between the two models is negligible.
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Wang et al. (2015) studied Carotid artery modeling. Fluid-structure interaction (FSI) model incorporating viscoelastic wall behaviour vs. Solid only viscoelastic model was evaluated on Wall displacements. A fluid-structure interaction model incorporating viscoelastic wall behavior successfully predicted carotid artery wall displacements, with negligible differences compared to a solid-only model.
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