Computational aeroacoustics of the EAA benchmark case of an axial fan

Stefan Schoder*, Clemens Junger, Manfred Kaltenbacher

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


This contribution benchmarks the aeroacoustic workflow of the perturbed convective wave equation and the Ffowcs Williams and Hawkings analogy in Farassat’s 1A version for a low-pressure axial fan. Thereby, we focus on the turbulence modeling of the flow simulation and mesh convergence concerning the complete aeroacoustic workflow. During the validation, good agreement has been found with the efficiency, the wall pressure sensor signals, and the mean velocity profiles in the duct. The analysis of the source term structures shows a strong correlation to the sound pressure spectrum. Finally, both acoustic sound propagation models are compared to the measured sound field data.
Original languageEnglish
Article number22
Number of pages17
JournalActa Acustica
Issue number5
Publication statusPublished - 14 Oct 2020


  • Aeroacoustics / Ffowcs–Williams and Hawkings integral formulation / Perturbed convective wave equation / Axial fan


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