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Benchmarking of Trailing-Edge Noise Computations - Outcome for the BANC-II Workshop

Herr, Michaela and Kamruzzaman, Mohammad (2013) Benchmarking of Trailing-Edge Noise Computations - Outcome for the BANC-II Workshop. 19th AIAA/CEAS Aeroacoustics Conference, 24.-27. Mai 2013, Berlin, Germany.

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Official URL: http://arc.aiaa.org | DOI: 10.2514/6.2013-2123

Abstract

The Second Workshop on Benchmark Problems for Airframe Noise Computations, BANC-II, was held on 7-8 June 2012 in Colorado Springs, CO, USA. The objective of this workshop was to assess the present computational capability in the area of physics-based prediction of dierent types of airframe noise problems and to advance the state-of-the-art via a combined effort. This paper summarizes the results from workshop category 1 which focuses on the prediction of broadband turbulent boundary-layer trailing-edge noise and related source quantities. 2D airfoil sections, namely a NACA0012 and DU-96-180, served as test cases. Code-to-code comparisons in this category were mainly restricted to relatively fast RANS-based methods applying statistical noise theory. Overall, the prediction capability was sufficient to capture the principal trailing-edge farfield noise scaling behavior in the mid-frequency range (about 1 kHz <= fc <= 5 kHz), i. e. the measured dependence of noise on angle-of-attack or free stream velocity. Differences in predicted trends appeared at lower and higher frequencies. Moreover, a comparatively large scatter among the DU-96-180 prediction results was observable, indicating individual room for improvement in the applied approaches.

Item URL in elib:https://elib.dlr.de/87604/
Document Type:Conference or Workshop Item (Speech)
Additional Information:(doi: 10.2514/6.2013-2123)
Title:Benchmarking of Trailing-Edge Noise Computations - Outcome for the BANC-II Workshop
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Herr, Michaelamichaela.herr (at) dlr.deUNSPECIFIED
Kamruzzaman, MohammadENERCON GmbHUNSPECIFIED
Date:May 2013
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-33
Series Name:Conference Proceedings online
Status:Published
Keywords:trailing-edge noise prediction, numerical simulations, CAA, benchmark
Event Title:19th AIAA/CEAS Aeroacoustics Conference
Event Location:Berlin, Germany
Event Type:international Conference
Event Dates:24.-27. Mai 2013
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Seyfried, Beate
Deposited On:14 Jan 2014 12:31
Last Modified:08 May 2014 23:20

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