zjworlder/VisAirfoil

RAE2822 Airfoil Viscous Flow Field Database

Dataset Summary

This dataset contains numerical viscous-flow data for the RAE2822 airfoil. It is intended for computational-fluid-dynamics (CFD) post-processing, aerodynamic analysis, surrogate-model development, and machine-learning research involving airfoil flow fields.

The dataset is organized around cases with varying Mach number (Ma), angle of attack (AoA), and Reynolds number (Re). The case naming convention visible in the data is:

Ma_<mach>__AoA_<angle>__Re_<reynolds>

The exact numerical conventions, solver settings, boundary conditions, mesh configuration, and convergence criteria are not encoded in this card and should be confirmed from the original simulation records before quantitative comparison or publication.

Repository Contents

The repository currently contains:

• Ma--AoA--Re/: a split 7-Zip archive containing the original Ma--AoA-Re data directory. The archive is stored as numbered parts (.7z.001 through .7z.035) because of the file-size limit of the hosting workflow.
• NPZ-Ma--AoA--Re/: NumPy NPZ files associated with the database.

The split archive is a storage artifact, not 35 independent datasets. Keep all numbered parts in the same directory before extraction.

Reconstructing the Archive

Install 7-Zip or another compatible extractor, then run:

7z x Ma--AoA--Re/Ma--AoA--Re.7z.001

The extractor will read the remaining numbered parts automatically when they are present beside .001.

Data Formats

The original case data include text-based CFD outputs such as field, wall, force, residual, and related diagnostic files. The NPZ files are NumPy containers and should be inspected with numpy.load before use:

import numpy as np

with np.load("example.npz") as data:
    print(data.files)
    for name in data.files:
        value = data[name]
        print(name, value.shape, value.dtype)

File names and variables may differ between cases. Users should validate shapes, units, coordinate orientation, and missing-value conventions for each downstream application.

Intended Uses

Appropriate uses include:

• studying viscous flow around the RAE2822 airfoil;
• developing and testing CFD surrogate or reduced-order models;
• training models for flow-field reconstruction or aerodynamic parameter prediction;
• benchmarking data-processing and visualization pipelines;
• inspecting the effect of Mach number, angle of attack, and Reynolds number on computed flow quantities.

Out-of-Scope Uses and Limitations

• The data should not be treated as experimental measurements or as a universal validation benchmark without independent verification.
• Numerical values may depend on the original solver, mesh, turbulence or transition model, discretization, and convergence settings.
• This card does not provide a complete solver configuration or a formal uncertainty quantification.
• Users are responsible for checking units, sign conventions, coordinate systems, duplicate cases, convergence quality, and physical plausibility.
• The archive parts must be downloaded together; an incomplete download cannot be reliably extracted.

Data Quality and Integrity

The archive upload was verified against the expected 35 local split-archive parts. The NPZ directory was verified to contain 44 files at upload time. These checks establish file presence and size at upload time; they do not replace scientific validation of the flow solutions.

Creation and Provenance

The dataset was assembled from locally stored RAE2822 airfoil viscous-flow simulation outputs and packaged for distribution through the Hugging Face Datasets Hub. The original authoring and solver metadata were not included in the available repository context; users who need reproducibility should request or supply the corresponding simulation configuration and provenance records.

License

No explicit dataset license was provided with the available materials. Until the rights holder specifies one, treat the data as all rights reserved and obtain permission before redistribution or commercial use.

Citation

If you use this dataset, cite the dataset page and include the access date:

zjworlder. RAE2822 Airfoil Viscous Flow Field Database.
Hugging Face Datasets, https://huggingface.co/datasets/zjworlder/RAE2822_airfoil_viscous_flow_field_database

Contact

For questions about the source simulations, case definitions, solver settings, or licensing, contact the dataset maintainer through the Hugging Face repository.