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Release notes

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

See also the unreleased changes.

% Type of changes

% ---------------

% Added Added for new features.

% Changed Changed for changes in existing functionality.

% Deprecated Deprecated for soon-to-be removed features.

% Removed Removed for now removed features.

% Fixed Fixed for any bug fixes.

% Security Security in case of vulnerabilities.

0.9.0 (2025-12-03)

Added/changed

  • !440 Better mechanism to print information after simulation initiation

  • !442 Store "state parameters" in restarting files

  • !441 and !443 basic utilities related to physical fields files {mod}fluidsim.util.phys_fields

Fixed

  • !439 Fix bug restarting file names

  • !445 Update/fix profile analysis

0.8.6 (2025-11-23)

  • Compatibility h5netcdf 1.7
  • Fix incorrect restart for forcing time correlated

0.8.5 (2025-10-23)

  • !427 Support for Python 3.14
  • !421 New time stepping method RK2_phaseshift_random_split
  • !415 FLUIDSIM_TYPE_FFT2D and FLUIDSIM_TYPE_FFT3D (see https://fluidfft.readthedocs.io/en/latest/plugins.html)
  • !408 temporal_spectra.py: improve plot_spectra
  • !407 Improve isotropic tcrandom forcing
  • !400 New script scripts/install-fluidsim-stack-from-source.py
  • and various fixes and small improvements...

0.8.4 (2024-11-08)

  • Python 3.13 compatibility

0.8.3 (2024-08-27)

  • New build with Transonic 0.7.2 to fix Windows wheels

0.8.2 (2024-08-17)

  • Compatibility with Python 3.12, Numpy 2.0 and mpi4py 4.0.
  • Few bug fixes and small improvements.
  • Installation methods with Apptainer and Guix.

0.8.1 (2024-02-12)

  • Few fixes for Fluidfft 0.4.0

0.8.0 (2024-01-31)

  • Build and upload wheels on PyPI with Github Actions!
  • Much better CI in foss.heptapod.net and Github Actions.
  • Use the Meson build system via meson-python.
  • Development: use PDM, Nox and Pixi.

0.7.4 (2023-10-05)

  • !342 Refactoring and improvements spectra ns2d and ns3d.
  • !335 Improvement fluidsim-ipy-load which can now take a path as argument
  • Code improvements, bug fixes (in particular for movies) and compatibility with new Matplotlib

0.7.3 (2023-05-24)

  • Official support for only Python 3.9, 3.10 and 3.11.
  • Few improvements for Fluidsimfoam.

0.7.2 (2023-01-05)

  • New module {mod}fluidsim_core.output.remaining_clock_time.

0.7.1 (2022-11-30)

  • !325 Small changes in restarts utilities for Snek5000 0.8.0.

0.7.0 (2022-11-23)

  • !316 Interactive movies

  • !317 and !318

    • Refactor movie code in fluidsim-core with several improvements and bugfixes ({mod}fluidsim_core.output.movies and {mod}fluidsim_core.output.phys_fields)
    • Movies for Snek5000

  • !319 Refactor restart code in fluidsim-core ({class}fluidsim_core.scripts.restart.RestarterABC and {class}fluidsim.util.scripts.restart.Restarter)

  • !320 Restart for Snek5000 in fluidsim-core

  • !321 command fluidsim-ipy-load.

0.6.1 (2022-09-07)

  • Turbulence models with extend_simul_class (!308, see {mod}fluidsim.base.turb_model)

  • Kolmogorov forcing (!307, see {mod}fluidsim.base.forcing.kolmogorov)

  • Output {mod}fluidsim.base.output.horiz_means (!309)

  • Output {mod}fluidsim.base.output.cross_corr3d (!295)

  • Better support for 3d FFT libs based on pencil decompositions (!283)

  • !289

    • File is_being_advanced.lock in the result directory during the runs
    • Better handling of signals (SIGINT, SIGTERM and SIGUSR2)
    • fluidsim-restart supports idempotent jobs (OAR scheduler)
    • {func}fluidsim.util.get_dataframe_from_paths using sim.output.get_mean_values
    • {func}fluidsim.util.get_last_estimated_remaining_duration
    • sim.output.spatiotemporal_spectra.get_spectra

  • CI also running on Github Actions (!224)

  • Various fixes (in particular energy steps with fluidsim-restart)

  • Various plot improvements (in particular plot_omega_emp in {mod}fluidsim.base.output.spatiotemporal_spectra)

0.6.0 (2022-02-07)

  • New subpackage {mod}fluidsim.util.scripts and module {mod}fluidsim.util.scripts.turb_trandom_anisotropic (!255).

  • Entry points console_scripts fluidsim-restart (!261) and fluidsim-modif-resolution (!263).

  • Forcing {class}fluidsim.base.forcing.anisotropic.TimeCorrelatedRandomPseudoSpectralAnisotropic (extension for 3d solvers + new parameter params.forcing.tcrandom_anisotropic.delta_angle) (!247).

  • New projection functions (toroidal/poloidal) in {mod}fluidsim.operators.operators3d (!247).

  • ! 250: New parameter params.projection for ns3d solvers.

    The equations (ns3d, ns3d.strat and ns3d.bouss) can be modified by projecting the solutions on the poloidal or toroidal manifolds.

  • Faster loading at Python start (!264)

  • Various bugfixes, in particular related to restart.

0.5.1 (2021-11-05)

  • !244: Taylor Green forcing for ns3d solvers
  • fluidsim-core: change order for the initialization of the parameters: Simul class before the subclasses.

0.5.0 (2021-09-29)

Added

  • !200 : New mechanism to easily extend a Simul class (subpackage {mod}fluidsim.extend_simul).

  • !201 : Improve FluidSim Core API with a warning and a convenience function

    • Warnings added when _set_attrib is called instead of _set_child by a InfoSolver instance
    • New function iter_complete_params

  • Output spatial_means_regions_milestone.py using {mod}fluidsim.extend_simul.

  • New options no_vz_kz0 and NO_KY0.

  • Spatiotemporal spectra and many improvements for the temporal spectra for ns3d and ns2d solvers by Jason Reneuve (!202, ...)

  • Better Burgers1d solvers (by Ashwin Vishnu)

Changed

  • !200 : (internal) {class}fluidsim_core.info.InfoSolverCore: __init__ now fully initializes the instance (calling the method complete_with_classes). New keyword argument only_root to initialize only the root level.
  • !211 : Replace for ns2d solvers the output frequency_spectra (nearly not used) by the newer output temporal_spectra written for ns3d solvers.

Fixed

  • Many bugfixes!

0.4.1 (2021-02-02)

Few bugfixes and !192 (temporal spectra for ns3d solvers).

0.4.0 (2021-01-11)

  • !186: Package split into fluidsim-core and fluidsim

    • Base classes and abstract base classes defined for params, info_solver, sim, output instances
    • Entry points as a plugin framework to register FluidSim solvers

  • base/output/print_stdout.py: better regularity saving + method plot_clock_times

  • Able to run bigger simulations (2034x2034x384) on the Occigen cluster (in particular new function fluidsim.modif_resolution_from_dir_memory_efficient)

0.3.3 (2020-10-15)

  • Bugfixes and optimizations (in particular for ns3d solvers)
  • Forcing WATU Coriolis and Milestone for ns3d.strat
  • pyproject.toml and isolated build
  • Timestepping using phase-shifting for dealiasing
  • Improve regularity of saving for some outputs

0.3.2 (2019-11-14)

  • Bug fixes and Transonic 0.4 compatibility

0.3.1 (2019-03-07)

  • Windows compatibility
  • Only Python code (stop using Cython)
  • Improvements ns2d.strat

0.3.0 (2019-01-31)

  • Drop support for Python 2.7!
  • Accelerated by Transonic & Pythran (also time stepping)
  • Better setup.py (by Ashwin Vishnu)
  • Improvement ns2d.strat (by Miguel Calpe Linares)
  • Much better testing (internal, CI, compatibility pytest, coverage 87%)
  • Fix several bugs :-)
  • New function load_for_restart

0.2.2 (2018-07-01)

  • Let fluidfft decides which FFT class to use (dependency fluidfft >= 0.2.4)

0.2.1 (2018-05-24)

  • IPython magic commands (by Ashwin Vishnu).
  • Bugfix divergence-free flow and time_stepping in ns3d solvers.

0.2.0 (2018-05-04)

  • Many bugfixes and nicer code (using the Python code formatter Black).
  • Faster ns3d solver.
  • ns2d.strat + anisotropic forcing (by Miguel Calpe Linares).
  • Nicer forcing parameters.

0.1.1

  • Better phys_fields.plot and phys_fields.animate (by Ashwin Vishnu and Miguel Calpe Linares).
  • Faster installation (with configuration file).
  • Installation without mpi4py.
  • Faster time stepping with less memory allocation.
  • Much faster ns3d solvers.

0.1.0

  • Uses fluidfft and Pythran

0.0.5

  • Compatible fluiddyn 0.1.2

0.0.4

  • 0D models (predaprey, lorenz)
  • Continuous integration, unittests with bitbucket-pipelines

0.0.3a0

Merge with geofluidsim (Ashwin Vishnu Mohanan repository)

  • Movies.
  • Preprocessing of parameters.
  • Less bugs.

0.0.2a1

  • Use a cleaner parameter container class (fluiddyn 0.0.8a1).

0.0.2a0

  • SetOfVariables inherits from numpy.ndarray.
  • The creation of default parameter has been simplified and is done by a class function Simul.create_default_params.

0.0.1a

  • Split the package fluiddyn between one base package and specialized packages.
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