U-DaLES
The facts below are what the maker publishes about U-DaLES, checked and dated. Our editors have not written about it yet.
The facts
Each one read from U-DaLES's own pages, with the date it was checked.
What it does
- 3D visuals
- Yeschecked 23 Sep 2026
- Air quality
- It supports passive or reactive scalars from point, line, or volume sources and includes a basic NOx–O3 chemistry scheme.checked 7 Oct 2026
- Assessment tools
- Nochecked 23 Sep 2026
- Building and terrain
- It represents buildings and terrain with a triangulated-surface immersed boundary method that conserves mass, momentum, and scalars.checked 7 Oct 2026
- Data export
- Yeschecked 23 Sep 2026
- Data format
- Simulation output is stored in NetCDF files, and parallel output must be merged for convenient visualization and processing.checked 7 Oct 2026
- Delivery mode
- desktopchecked 23 Sep 2026
- Dependencies
- The solver prerequisites include CMake, NetCDF-Fortran, a GNU, Intel, or Cray Fortran compiler, MPICH or Open-MPI, and FFTW.checked 7 Oct 2026
- Input and output tools
- The documented workflow uses MATLAB preprocessing and stores simulation output in netCDF files that can be processed with Python, MATLAB, or other languages.checked 7 Oct 2026
- Intended users
- The model documentation describes uses including urban airflow, heat transfer, pollutant dispersion, and urban air-quality studies at building-resolving resolution.checked 7 Oct 2026
- Lesson library
- Nochecked 23 Sep 2026
- License
- The public source repository states that uDALES files are licensed under the GNU General Public License.checked 7 Oct 2026
- Offline access
- Yeschecked 23 Sep 2026
- Parallel computing
- The model uses MPI with a 2-D pencil domain decomposition and is described as scaling to large domains and core counts on HPC systems.checked 7 Oct 2026
- Pollutants
- It supports passive or reactive scalars from point, line, or volume sources and includes a basic NOx–O3 chemistry scheme.checked 7 Oct 2026
- Purpose
- uDALES is an open-source urban microscale modelling tool for large-eddy simulation of airflow, heat transfer, moisture, and pollutant transport.checked 7 Oct 2026
- Python package
- The Python package provides preprocessing, geometry handling, simulation-output analysis, visualization, and statistics modules.checked 7 Oct 2026
- Python package status
- The Python package is under active testing, its interfaces may change, and it is intended to replace the MATLAB toolchain, which the page says will be retired from uDALES v3.0 onwards.checked 7 Oct 2026
- Python tools
- The Python package provides preprocessing, NetCDF output analysis, STL geometry handling, 3-D visualization, and statistics modules.checked 7 Oct 2026
- Support
- The project asks users to report issues or unexpected behavior with the new Python package through the uDALES GitHub issue tracker.checked 7 Oct 2026
- Supported systems
- The model is supported on Linux, macOS, and Windows Subsystem for Linux, and the documentation also provides HPC build instructions.checked 7 Oct 2026
- Surface energy
- Its facet-level surface energy balance includes shortwave and longwave radiation, multilayer wall conduction, and turbulent sensible and latent heat fluxes.checked 7 Oct 2026
Money
- Free plan
- Yeschecked 23 Sep 2026
Where it runs
- Platforms
- The installation guide supports Linux, macOS, and Windows Subsystem for Linux; it also documents builds on HPC clusters.checked 7 Oct 2026
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