Z3ST

Z3ST#

Z3ST is a finite-element framework built upon the FEniCSx ecosystem. It enables thermo-mechanical and multiphysics simulations for scientific research, didactive activities, and verification workflows.

Z3ST aim at providing a clean and extensible interface for model definition, meshing, and solution pipelines. It is designed with a strong focus on:

  • Numerical reproducibility, through non-regression testing;

  • Ease of use, with YAML-based configuration and automatic mesh handling;

  • Interoperability, leveraging standard tools like Gmsh, meshio, and ParaView;

  • Scientific transparency, through open-source code and complete documentation.

Overview#

Z3ST integrates the following main modules:

  • z3st.solver - FEM solver interface for thermal and mechanical problems

  • z3st.models - physics models (mechanical, thermal, phase-field fracture, cluster dynamics, etc.)

  • z3st.mesh - geometry and mesh generation utilities

  • z3st.config - YAML-based parameter management

  • z3st.export_vtu - post-processing and result export tools

  • z3st.utils_load - I/O helpers for simulation data

The framework supports both steady-state and transient analyses, and includes a collection of benchmark problems to ensure consistency across versions.

Citing Z3ST#

If you use Z3ST in your research, please cite it as:

Giovanni Zullo (2025).
Z3ST: an open-source FEniCSx framework for thermo-mechanical analysis.
https://doi.org/10.5281/zenodo.17748028

Documentation Contents#

User Documentation

Support and contact#

If you encounter issues, please open a GitHub issue:

For academic or collaborative inquiries, contact:

Giovanni Zullo — <mailto:giovanni.zullo@polimi.it>

Contents