turtleFSI

5.9easy start · #77 of 91
in Physics Simulation Software

Free to practise onnot on record
Free trialnot on record
Well documentedyes
Runs where you worknot on record

Runs on Linux, Mac, self-hosted.

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turtleFSI is ranked #77 of 91 in physics simulation software on The Geeks Club. It runs on Linux, macOS, Self-hosted.

Compared on physics simulation software

Lesson library: No
Assessment tools: No

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The record

Purpose: turtleFSI is a monolithic fluid-structure interaction solver written in FEniCS for research groups and individuals investigating fluid-structure interaction problems.
Solver approach: The project describes turtleFSI as a fully monolithic solver using the classical arbitrary Lagrangian-Eulerian formulation.
Mesh lifting: It provides mesh lifting options including Laplace and biharmonic methods, with biharmonic described as more robust for large deformations but more computationally expensive and memory intensive.
Simulation controls: Users can set simulation parameters from the command line and supply their own problem file.
Checkpointing: Built-in functionality supports saving checkpoints at a chosen frequency and restarting from a previous checkpoint.
Visualization: The solver can save XDMF result files for visualization in tools such as ParaView.
Dependencies: The documentation lists FEniCS 2019.1.0, NumPy greater than 1.1X, and Python 3.7 or later as dependencies.
Installation: The documentation recommends Anaconda or Miniconda installation on macOS or Linux and building from source for high-performance computing clusters.
Parallel computing: The project says it can use FEniCS high-performance computing functionality and run with MPI parallel tasks.
Known limitation: For large problems, often 3D problems with many degrees of freedom and several tens of processors, the default MUMPS solver may fail, possibly because it lacks memory for the linear system.
License: The repository states that turtleFSI is licensed under GNU GPL version 3 or, at the user's option, any later version.
Support: The repository directs users to its GitHub issue tracker to report bugs and other issues.

Where it ranks on The Geeks Club

Best Physics Simulation Software in 2026#77 of 91

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Sources

github.com/KVSlab/turtleFSI· checked 5 Oct 2026
joss.theoj.org/papers/10.21105/joss.02089.pdf· checked 5 Oct 2026
turtlefsi2.readthedocs.io/en/latest/using_turtleFSI.html· checked 5 Oct 2026
turtlefsi2.readthedocs.io/en/latest/installation.html· checked 5 Oct 2026
turtlefsi2.readthedocs.io/en/latest/known_issues.html· checked 5 Oct 2026