A reduced order model formulation for left atrium flow: an atrial fibrillation case
Year: 2024
Type: article
Abstract: A data-driven reduced order model (ROM) based on a proper orthogonal decomposition-radial basis function (POD-RBF) approach is adopted in this paper for the analysis of blood flow dynamics in a patient-specific case of atrial fibrillation (AF). The full order model (FOM) is represented by incompressible Navier-Stokes equations, discretized with a finite volume (FV) approach. Both the Newtonian and the Casson's constitutive laws are employed. The aim is to build a computational tool able to efficiently and accurately reconstruct the patterns of relevant hemodynamics indices related to the stasis of the blood in a physical parametrization framework including the cardiac output in the Newtonian case and also the plasma viscosity and the hematocrit in the non-Newtonian one. Many FOM-ROM comparisons are shown to analyze the performance of our approach as regards errors and computational speed-up.
Language: English
Subfield: Statistical and Nonlinear Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,890
Funders: Istituto Nazionale di Alta Matematica "Francesco Severi", Banco Santander, Comunidad de Madrid, Scuola Internazionale Superiore di Studi Avanzati, European Commission, Universidad Politécnica de Madrid, Horizon 2020 Framework Programme, Gruppo Nazionale per il Calcolo Scientifico, HORIZON EUROPE Framework Programme, European Research Council
OpenAlex ID: W4396977409