Characterization of liners using a lattice-boltzmann solver

Characterization of liners using a lattice-boltzmann solver

Manjunath, P. (TU Delft Wind Energy)
Avallone, F. (TU Delft Wind Energy)
Casalino, D. (TU Delft Wind Energy)
Ragni, D. (TU Delft Wind Energy)
Snellen, M. (TU Delft Aircraft Noise and Climate Effects)

2018

Acoustic liners are widely used as noise suppression devices, for example in aircraft engines. The effectiveness of the liners is measured through the impedance. In the present study, using a lattice-Boltzmann solver, the response of two liner geometries to grazing acoustic waves is examined. The two geometries have porosity equal to 0.99% and 6.89%, respectively. Impedance is computed using the traditional in-situ method. The results from the simulation are validated against previous experimental data, DNS data and predictions from semi-empirical models. Results show agreement with these reference data, allowing to use the computational setup for further analysis with a realistic liner configuration in the presence of a grazing flow.

http://resolver.tudelft.nl/uuid:c3186c09-9cab-40b5-8123-5eea710b60a0

https://doi.org/10.2514/6.2018-4192

American Institute of Aeronautics and Astronautics Inc. (AIAA)

2021-12-08

9781624105609

2018 AIAA/CEAS Aeroacoustics Conference

AIAA/CEAS Aeroacoustics Conference, 2018, 2018-06-25 → 2018-06-29, Atlanta, United States

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

conference paper

© 2018 P. Manjunath, F. Avallone, D. Casalino, D. Ragni, M. Snellen