Data, code and geometry for "Spectral theory of the aeroacoustic diffraction filter: radiating-wavenumber projection and an exact surface distribution of radiated sound power"

The deposit has three parts. Geometry: the SD7003 aerofoil used in the simulation (chord 235 mm, span 400 mm, 8 deg angle of attack) as a closed STL and a 2-D section file, with the script that regenerates them offline from the public UIUC/Selig SD7003 coordinates. Data: the processed arrays behind the figures — per-face surface maps of the wall pressure, the filtered acoustic surface pressure, and the surface power density sigma (band-integrated at 500, 1000 and 2000 Hz); the surface-resolution convergence of the power identity (integral of sigma over the surface equals the radiated power) and of the completeness defect; the far-field directivity on a 1 m ring radiated from the full and from the filtered pressure; and FW-H far-field spectra and directivity (tripped, untripped, and ring).

Spectra are in dB/Hz re 20 uPa. Code: Python post-processing and figure scripts (NumPy, SciPy, Matplotlib) that read the data files and reproduce the figures. The raw lattice-Boltzmann wall-pressure time series is not included because of its size; the processed arrays reproduce every figure that uses simulation data.

The direct-field ring time history needed for the FW-H-versus-direct cross-check is available from the authors on request. Data and geometry are licensed under CC BY 4.0; code under the MIT licence. The SD7003 section originates from the public UIUC/Selig aerofoil database and should be credited to that source when reused.

Please cite the manuscript and this deposit if you use the data.