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Full multi-port characterization of a circular orifice plate
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL.ORCID iD: 0000-0001-7898-8643
2016 (English)In: 22nd AIAA/CEAS Aeroacoustics Conference, 2016, American Institute of Aeronautics and Astronautics Inc, AIAA , 2016Conference paper (Refereed)
Abstract [en]

A multi-port method is used to extract complex mode amplitudes from experimental data of in-duct orifice plates for frequencies with cut-ons of several higher order modes. The two-port method is therefore extended to resolve higher order modes, i.e. spinning modes and radial modes. The work presented in Sack et all.1 is continued and a new test- rig design is presented which enables more stable measurements and cleaner data. The scattering and source data for higher order modes of a circular sharp-edged orifice plate with low Mach-number mean flow is presented and used for advanced post-processing. The gained data is used to predict the scattering of a tandem orifice configuration and the prediction is compared to measurement results.

Place, publisher, year, edition, pages
American Institute of Aeronautics and Astronautics Inc, AIAA , 2016.
Keyword [en]
Aeroacoustics, Mach number, Circular orifices, Higher-order modes, Low Mach numbers, Multi-port method, Post processing, Spinning modes, Stable measurements, Two-port method, Orifices
National Category
Vehicle Engineering
Identifiers
URN: urn:nbn:se:kth:diva-195518ScopusID: 2-s2.0-84982985725ISBN: 9781624103865 (print)OAI: oai:DiVA.org:kth-195518DiVA: diva2:1049695
Conference
22nd AIAA/CEAS Aeroacoustics Conference, 2016, 30 May 2016 through 1 June 2016
Note

QC 20161125

Available from: 2016-11-25 Created: 2016-11-03 Last updated: 2016-11-25Bibliographically approved

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