JustRelax.jl: A Julia package for geodynamic modeling with matrix-free solvers

The Journal of Open Source Software 2026 Open access

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Authors: Albert de Montserrat, Pascal Aellig, Christian Schuler, Ivan Navarrete, Ludovic Räss, Lukas Fuchs, Boris J. P. Kaus, Hugo Domínguez
DOI: 10.21105/joss.09365
Cited by: 2
References: 15

Abstract

JustRelax.jl is an open-source, highly portable, and high-performance Julia (Bezanson et al., 2017) package designed for geodynamic modeling.It employs the Accelerated Pseudo-Transient (APT) (Räss et al., 2022) method to solve the Stokes and diffusion equations, making it well-suited to exploit Graphics Processing Units (GPUs).JustRelax.jlincorporates a wide range of features critical to computational geodynamics, including complex and highly non-linear rheologies, free surface, and a particle-in-cell method to advect material information.Several of the features available in JustRelax.jlare outsourced to specialized external packages, reducing the core code base, and improving maintainability and reusability.

Fields of Study & Subjects

Geological Modeling and Analysis Geophysical and Geoelectrical Methods Seismic Imaging and Inversion Techniques

Publication details

Journal / source
The Journal of Open Source Software
Publisher
The Open Journal
Volume
11
Issue
118
Pages
9365–9365
Publication date
3 February 2026