A stable loosely-coupled scheme for cardiac electro-fluid-structure interaction

10/03/2022
by   Michele Bucelli, et al.
0

We present a loosely coupled scheme for the numerical simulation of the cardiac electro-fluid-structure interaction problem, whose solution is typically computationally intensive due to the need to suitably treat the coupling of the different submodels. Our scheme relies on a segregated treatment of the subproblems, in particular on an explicit Robin-Neumann algorithm for the fluid-structure interaction, aiming at reducing the computational burden of numerical simulations. The results, both in an ideal and a realistic cardiac setting, show that the proposed scheme is stable at the regimes typical of cardiac simulations. From a comparison with a scheme with implicit fluid-structure interaction, it emerges that, while conservation properties are not fully preserved, computational times significantly benefit from the explicit scheme. Overall, the explicit discretization represents a good trade-off between accuracy and cost, and is a valuable alternative to implicit schemes for fast large-scale simulations.

READ FULL TEXT

page 3

page 13

page 14

page 19

page 20

page 21

research
05/26/2021

Time integration schemes for fluid-structure interaction problems: non fitted FEMs for immersed thin structures

We analyse three time integration schemes for unfitted methods in fluid ...
research
02/11/2020

On numerical approximations to fluid-structure interactions involving compressible fluids

In this paper we introduce a numerical scheme for fluid-structure intera...
research
07/30/2020

An oscillation-free fully partitioned scheme for the numerical modeling of cardiac active mechanics

In silico models of cardiac electromechanics couple together mathematica...
research
08/07/2023

A staggered-in-time and non-conforming-in-space numerical framework for realistic cardiac electrophysiology outputs

Computer-based simulations of non-invasive cardiac electrical outputs, s...
research
11/30/2021

Coupling and Simulation of Fluid-Structure Interaction Problems for Automotive Sun-roof on Graphics Processing Unit

In this paper, the authors propose an analysis of the frequency response...
research
01/29/2021

On the periodicity of cardiovascular fluid dynamics simulations

Three-dimensional cardiovascular fluid dynamics simulations typically re...

Please sign up or login with your details

Forgot password? Click here to reset