Proposal for Numerical Benchmarking of Fluid-Structure Interaction in Cerebral Aneurysms
arXiv preprint arXiv:2308.08301, 2023•arxiv.org
Computational fluid dynamics is intensively used to deepen the understanding of aneurysm
growth and rupture in the attempt to support physicians during therapy planning. Numerous
studies have assumed fully-rigid vessel walls in their simulations, whose sole
hemodynamics may fail to provide a satisfactory criterion for rupture risk assessment.
Moreover, direct in-vivo observations of intracranial aneurysm pulsation have been recently
reported, encouraging the development of fluid-structure interaction for their modelling and …
growth and rupture in the attempt to support physicians during therapy planning. Numerous
studies have assumed fully-rigid vessel walls in their simulations, whose sole
hemodynamics may fail to provide a satisfactory criterion for rupture risk assessment.
Moreover, direct in-vivo observations of intracranial aneurysm pulsation have been recently
reported, encouraging the development of fluid-structure interaction for their modelling and …
Computational fluid dynamics is intensively used to deepen the understanding of aneurysm growth and rupture in the attempt to support physicians during therapy planning. Numerous studies have assumed fully-rigid vessel walls in their simulations, whose sole hemodynamics may fail to provide a satisfactory criterion for rupture risk assessment. Moreover, direct in-vivo observations of intracranial aneurysm pulsation have been recently reported, encouraging the development of fluid-structure interaction for their modelling and for new assessments. In this work, we describe a new fluid-structure interaction benchmark setting for the careful evaluation of different aneurysm shapes. The studied configurations consist of three real aneurysm domes positioned on a toroidal channel. All geometric features, meshing characteristics, flow quantities, comparisons with a rigid-wall model and corresponding plots are provided. Reported results emphasize the alteration of flow patterns and hemodynamic descriptors when moving from the rigid-wall model to the complete fluid-structure interaction framework, thereby underlining the importance of the coupling between hemodynamics and the surrounding vessel tissue.
arxiv.org