Herr, Michaela and Kamruzzaman, Mohammad (2013) Benchmarking of Trailing-Edge Noise Computations - Outcome for the BANC-II Workshop. 19th AIAA/CEAS Aeroacoustics Conference, 2013-05-24 - 2013-05-27, Berlin, Germany. doi: 10.2514/6.2013-2123.
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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/ | ||||||||||||
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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: |
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Date: | May 2013 | ||||||||||||
Refereed publication: | No | ||||||||||||
Open Access: | No | ||||||||||||
Gold Open Access: | No | ||||||||||||
In SCOPUS: | No | ||||||||||||
In ISI Web of Science: | No | ||||||||||||
DOI: | 10.2514/6.2013-2123 | ||||||||||||
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 Start Date: | 24 May 2013 | ||||||||||||
Event End Date: | 27 May 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: | 24 Apr 2024 19:53 |
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