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Analysis of the Characteristic Acoustic Tones of an Impinging Jet
Sapienza University of Rome.
Sapienza University of Rome.ORCID iD: 0000-0002-8038-1127
Sapienza University of Rome.
Sapienza University of Rome.ORCID iD: 0000-0002-5125-3337
2013 (English)In: 19th AIAA/CEAS Aeroacoustics Conference, American Institute of Aeronautics and Astronautics, 2013Conference paper, Published paper (Refereed)
Abstract [en]

The acoustic emission of a supersonic jet is an interesting and fundamental issue due to the several technological applications and the diverse physical aspects to be still clarified. An experimental analysis of the characteristic acoustic tones of a supersonic impinging jet has been carried out with a particular attention on the effect of the nozzle pressure ratio and the distance of the impinging surface. The screech tones, typical of an imperfectly expanded supersonic free jet, have been first investigated to have an idea of the deflection from the free jet behavior due to the impinging surface. Then the analysis has been focused on smaller distances of the impinging plate from the jet exit to evaluate the behavior of the impinging tones. The difference between screech and impinging tones, due to the different interactions in the generating feedback mechanism, has been observed.

Place, publisher, year, edition, pages
American Institute of Aeronautics and Astronautics, 2013.
National Category
Aerospace Engineering
Identifiers
URN: urn:nbn:se:kth:diva-223695DOI: 10.2514/6.2013-2090Scopus ID: 2-s2.0-84883682651ISBN: 9781624102134 (print)OAI: oai:DiVA.org:kth-223695DiVA, id: diva2:1186524
Conference
19th AIAA/CEAS Aeroacoustics Conference, Berlin, Germany, 27 May 2013 through 29 May 2013
Note

QC 20180301

Available from: 2018-02-28 Created: 2018-02-28 Last updated: 2018-03-01Bibliographically approved

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Lacagnina, GiovanniRomano, Giovanni Paolo
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