Full multi-port characterization of a circular orifice plate
2016 (English)In: 22nd AIAA/CEAS Aeroacoustics Conference, 2016, American Institute of Aeronautics and Astronautics Inc, AIAA , 2016Conference paper (Refereed)
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.
Aeroacoustics, Mach number, Circular orifices, Higher-order modes, Low Mach numbers, Multi-port method, Post processing, Spinning modes, Stable measurements, Two-port method, Orifices
IdentifiersURN: urn:nbn:se:kth:diva-195518ScopusID: 2-s2.0-84982985725ISBN: 9781624103865OAI: oai:DiVA.org:kth-195518DiVA: diva2:1049695
22nd AIAA/CEAS Aeroacoustics Conference, 2016, 30 May 2016 through 1 June 2016
QC 201611252016-11-252016-11-032016-11-25Bibliographically approved