| Issue |
Acta Acust.
Volume 4, Number 5, 2020
|
|
|---|---|---|
| Article Number | 22 | |
| Number of page(s) | 17 | |
| Section | Flow Acoustics | |
| DOI | https://doi.org/10.1051/aacus/2020021 | |
| Published online | 14 October 2020 | |
Scientific Article
Computational aeroacoustics of the EAA benchmark case of an axial fan
1
Institute of Fundamentals and Theory in Electrical Engineering, TU Graz, 8010 Graz, Austria
2
Institute of Mechanics and Mechatronics, TU Wien, 1040 Wien, Austria
* Corresponding author: stefan.schoder@tugraz.at
Received:
23
October
2019
Accepted:
23
September
2020
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.
Key words: Aeroacoustics / Ffowcs–Williams and Hawkings integral formulation / Perturbed convective wave equation / Axial fan
© S. Schoder et al., Published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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