Aneurysmal haemodynamics: A three-dimensional fluid-structure interaction approach

In numerical studies of blood flow in aneurysms, it is essential to consider movements of the arterial wall and their interactions with the fluid. Here, mechanics equations are augmented to an Euler--Lagrange formulation, facilitating the study of blood flow in a pathological geometry during the cardiac cycle. The arterial morphology and pulse are represented by the transformation of the system of equations into a body-fitted approach via generalized curvilinear coordinates. Dynamic three-dimensional governing partial differential equations are discretized with the finite volume method on a collocated grid. The results obtained with this mathematical model reveal that the pulsating wall influences the velocity field, with prominent recirculation zones. In addition, localised lateral pressure gradients are observed within the pathological region. Increased pulsatility causes large augmentations of the Reynolds and Womersley numbers, with divergence from the hydrodynamic case. Analysis of..., , # Aneurysmal haemodynamics: A three-dimensional fluid-structure interaction approach Dryad DOI: https://doi.org/10.5061/dryad.pc866t22m File Formats: ZIP archives, MATLAB (.m) scripts, ASCII (.dat) data files, GIF visualizations Software Required: MATLAB R2023a or newer License: CC0 (Public Domain) --- ### OVERVIEW OF THE DATASET --- This dataset contains numerical simulation results from a three-dimensional computational study of blood flow in an aneurysmal vessel geometry. The simulations include: * One rigid-wall haemodynamic case * Two fluid–structure interaction (FSI) cases with: * Low pulsatility * High pulsatility The dataset supports visualization and post-processing of: * Velocity fields * Pressure fields * Time-Averaged Wall Shear Stress (TAWSS) * Oscillating Shear Index (OSI) The data may be reused for solver validation, biomedical flow analysis, rigid vs deformable wall comparison, and educational purposes in computational fluid dynamics (CFD). All data are ...,