Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Numerical investigation of a realistic nose landing gear
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.ORCID iD: 0000-0002-0856-8181
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.ORCID iD: 0000-0003-0176-5358
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.ORCID iD: 0000-0002-9061-4174
2014 (English)In: 20th AIAA/CEAS Aeroacoustics Conference, American Institute of Aeronautics and Astronautics, 2014Conference paper, Published paper (Other academic)
Abstract [en]

A hybrid approach is used to study the noise generated by a realistic full-scale nose land- ing gear configuration. Compressible Detached-Eddy Simulations are performed to com- pute the flow field and the far-field noise is evaluated with the Ffowcs Williams-Hawkings acoustic analogy. Preliminary Reynolds-Averaged Navier-Stokes simulations are performed to evaluate the sensitivity of the steady solution to the computational grid. It is found that mesh independence is not obtained with the grids considered, although the agreement between the medium and fine grids is reasonable. The time-dependent solution obtained via DES is examined and the main noise sources on the gear surfaces are identified. The power spectral density of pressure uctuations on the tyre surface is found to be rather broadband on the noisier sides of the tyre, while distinct humps and a sharp peak near 1kHz are identified in the quieter regions of the tyre. This sharp peak is observed again in the far-field noise. Further work is needed to clarify the cause of this peak. Its frequency is too high to link it with shedding from a gear component, although it could be associated with unsteadiness near the tyre corner.

Place, publisher, year, edition, pages
American Institute of Aeronautics and Astronautics, 2014.
Keyword [en]
Acoustic noise, Landing gear (aircraft), Power spectral density, Tires, Computational grids, Detached eddy simulations, Gear configurations, Mesh independence, Nose landing gear, Numerical investigations, Reynolds-averaged navier-stokes simulations, Time-dependent solutions
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-159511DOI: 10.2514/6.2014-2077Scopus ID: 2-s2.0-84903900413ISBN: 978-162410285-1 (print)OAI: oai:DiVA.org:kth-159511DiVA: diva2:785402
Conference
20th AIAA/CEAS Aeroacoustics Conference, Atlanta, GA, United States, 16-20 June 2014
Note

QC 20150209

Available from: 2015-02-02 Created: 2015-02-02 Last updated: 2016-04-15Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Authority records BETA

Dahan, Jeremy A.O'Reilly, CiaránEfraimsson, Gunilla

Search in DiVA

By author/editor
Dahan, Jeremy A.O'Reilly, CiaránEfraimsson, Gunilla
By organisation
Aeronautical and Vehicle Engineering
Fluid Mechanics and Acoustics

Search outside of DiVA

GoogleGoogle Scholar

doi
isbn
urn-nbn

Altmetric score

doi
isbn
urn-nbn
Total: 145 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf