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Aeroacoustic optimization of the NWB airline and turning vanes based on high fidelity CFD and acoustic simulation

Melber-Wilkending, Stefan and Bergmann, Andreas (2012) Aeroacoustic optimization of the NWB airline and turning vanes based on high fidelity CFD and acoustic simulation. 18th AIAA/CEAS Aeroacoustics Conference, Colorado Springs, Colorado, USA.

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Abstract

In the period between beginning of the year 2009 and mid of the year 2010 the turning vanes of the aeroacoustic wind tunnel DNW-NWB have been successfully re-designed based on an optimization loop developed of the DLR Institute of Aerodynamics and Flow Technology in Braunschweig. A new wind tunnel was built relying only on computational fluid dynamics (CFD) which contradicts the classical approach based on experimental support by means of a pilot tunnel. The optimization chain discussed in this paper is based on an aerodynamic flow solution in a horizontal 2D cut through the airline and turning vanes. The objective is to minimize the energy loss through the vanes and is the basis for an optimization loop. Therefore the geometry and position of the vanes are parameterized in a CAD package and coupled with a hybrid unstructured grid generator. Further on, a ray tracer (program for simulation of lightening of a scene) is used as an acoustic analogy to simulate the acoustic behaviour of the turning vanes including the tunnel walls.

Item URL in elib:https://elib.dlr.de/79810/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Aeroacoustic optimization of the NWB airline and turning vanes based on high fidelity CFD and acoustic simulation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Melber-Wilkending, Stefanstefan.melber (at) dlr.deUNSPECIFIED
Bergmann, Andreasandreas.bergmann (at) dlr.deUNSPECIFIED
Date:June 2012
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Windkanalentwurf, Wind-tunnel design, Umlenkschaufeln, Turning Vanes, CFD, Aero-akustik
Event Title:18th AIAA/CEAS Aeroacoustics Conference
Event Location:Colorado Springs, Colorado, USA
Event Type:international Conference
Organizer:AIAA
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 - Simulation & Validation (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Transport Aircraft
Deposited By: Melber-Wilkending, Stefan
Deposited On:17 Dec 2012 09:01
Last Modified:17 Dec 2012 09:01

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