Fischer, André and Bake, Friedrich and Bassetti, Alessoandro (2013) The acoustic-particle velocity in the vicinity of a liner: a PIV-CAA comparison. In: 19th AIAA/CEAS Aeroacoustics Conference. 19th AIAA/CEAS Aeroacoustics Conference (34th AIAA Aeroacoustics Conference), 2013-05-27 - 2013-05-29, Berlin, Deutschland. doi: 10.2514/6.2013-2055.
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Abstract
A comparison between measurements and simulations of the acoustic-particle-velocity field in a rectangular duct in the near field of a single-degree-of-freedom, Helmholtz-resonator liner is presented. For the measurements, at low-velocity (Ma=0.01) grazing flow condition, the non-intrusive measurement technique particle-image velocimetry (PIV) is applied. The computational aeroacoustic (CAA) simulation is performed by solving the linearised Euler equations in the time domain, without background flow (Ma=0). The CAA solution uses an extended-Helmholtz-resonator acoustic-impedance model to represent the liner. A strong similarity between the simulated and the measured acoustic-particle-velocity distributions is observed. This suggests that the PIV-based technique enables the visualisation of the acoustic-velocity field, on the one hand. On the other hand, it confirms that the given acoustic-impedance model effectively simulates the response of a liner, in terms of the near-field acoustic-particle velocity.
Item URL in elib: | https://elib.dlr.de/82824/ | ||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech, Paper) | ||||||||||||||||
Title: | The acoustic-particle velocity in the vicinity of a liner: a PIV-CAA comparison | ||||||||||||||||
Authors: |
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Date: | 27 May 2013 | ||||||||||||||||
Journal or Publication Title: | 19th AIAA/CEAS Aeroacoustics Conference | ||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||
Open Access: | No | ||||||||||||||||
Gold Open Access: | No | ||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||
DOI: | 10.2514/6.2013-2055 | ||||||||||||||||
Status: | Published | ||||||||||||||||
Keywords: | acoustic particle velocity, Helmholtz resonator liner, PIV, CAA | ||||||||||||||||
Event Title: | 19th AIAA/CEAS Aeroacoustics Conference (34th AIAA Aeroacoustics Conference) | ||||||||||||||||
Event Location: | Berlin, Deutschland | ||||||||||||||||
Event Type: | international Conference | ||||||||||||||||
Event Start Date: | 27 May 2013 | ||||||||||||||||
Event End Date: | 29 May 2013 | ||||||||||||||||
Organizer: | AIAA/CEAS | ||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||
HGF - Program: | Aeronautics | ||||||||||||||||
HGF - Program Themes: | Propulsion Systems (old) | ||||||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||||||
DLR - Program: | L ER - Engine Research | ||||||||||||||||
DLR - Research theme (Project): | L - Combustion Chamber Technologies (old) | ||||||||||||||||
Location: | Berlin-Adlershof | ||||||||||||||||
Institutes and Institutions: | Institute of Propulsion Technology > Engine Acoustic | ||||||||||||||||
Deposited By: | Fischer, Andre | ||||||||||||||||
Deposited On: | 19 Jun 2013 16:40 | ||||||||||||||||
Last Modified: | 24 Apr 2024 19:49 |
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