The lifex library version 2.0

TL;DR

The lifex library version 2.0 introduces new methods, optimizations, and extended support for multiphysics simulations, enhancing its versatility and performance for high-fidelity finite element modeling.

Contribution

This release adds an intergrid transfer method, optimizes search algorithms, extends support for 2D and mixed-dimensional problems, and improves I/O and serialization features.

Findings

Enhanced multiphysics coupling capabilities.

Significant performance optimizations.

Extended support for diverse problem dimensions.

Abstract

This article presents updates to lifex [Africa, SoftwareX (2022)], a C++ library for high-performance finite element simulations of multiphysics, multiscale and multidomain problems. In this release, we introduce an additional intergrid transfer method for non-matching multiphysics coupling on the same domain, significantly optimize nearest-neighbor point searches and interface coupling utilities, extend the support for 2D and mixed-dimensional problems, and provide improved facilities for input/output and simulation serialization and restart. These advancements also propagate to the previously released modules of lifex specifically designed for cardiac modeling and simulation, namely lifex-fiber [Africa et al., BMC Bioinformatics (2023)], lifex-ep [Africa et al., BMC Bioinformatics (2023)] and lifex-cfd [Africa et al., Computer Physics Communications (2024)]. The changes introduced in this release aim at consolidating lifex's position as a valuable and versatile tool for the simulation of multiphysics systems.