Wave Propagation on Turbulent Jets
Thwaites, S.; Fletcher, Neville H.
Description
Results of experiments involving the propagation of acoustically generated waves on turbulent plane jets are presented. The jets are produced by a perspex reconstruction of an organ pipe flue and their behaviour is shown to conform to the predictions of similarity and self-preservation; i.e. the jet velocity V"' x-1/2 and the jet-width is proportional to x, where xis the distance from the slit. Thus they are fully turbulent and, as a consequence, well behaved and reproducible. The measured...[Show more]
dc.contributor.author | Thwaites, S. | |
---|---|---|
dc.contributor.author | Fletcher, Neville H. | |
dc.date.accessioned | 2020-11-04T23:32:52Z | |
dc.date.available | 2020-11-04T23:32:52Z | |
dc.identifier.issn | 1610-1928 | |
dc.identifier.uri | http://hdl.handle.net/1885/213631 | |
dc.description.abstract | Results of experiments involving the propagation of acoustically generated waves on turbulent plane jets are presented. The jets are produced by a perspex reconstruction of an organ pipe flue and their behaviour is shown to conform to the predictions of similarity and self-preservation; i.e. the jet velocity V"' x-1/2 and the jet-width is proportional to x, where xis the distance from the slit. Thus they are fully turbulent and, as a consequence, well behaved and reproducible. The measured wave velocities for frequencies between 200 Hz and 1200 Hz and slit-widths between 0.5 mm and 1.0 mm are compared with similar mea$urements on laminar jets. However, the stable nature of the turbulent jet allows much higher blowing pressures, up to 1500 Pa, to be used. The wave velocities u for the turbulent jet vary as x-1/2 and so the ratio of the ·wave velocity to the jet centre-velocity is constant along the jet. This ratio is closely equal to 0.5 except for small values of the effiux velocity and slit-width wh3re it rises to 0.6. | |
dc.format.mimetype | application/pdf | |
dc.language.iso | en_AU | |
dc.publisher | European Acoustics Association | |
dc.rights | © 1980 European Acoustics Association | |
dc.source | Acta Acustica united with Acustica | |
dc.title | Wave Propagation on Turbulent Jets | |
dc.type | Journal article | |
local.description.notes | The author was affiliated with University of New England when the paper was published | |
local.identifier.citationvolume | 45 | |
dc.date.issued | 1980 | |
local.publisher.url | https://acta-acustica.edpsciences.org/ | |
local.type.status | Published Version | |
local.contributor.affiliation | Fletcher, N. H., Department of Electronic Materials Engineering, The Australian National University | |
local.bibliographicCitation.issue | 3 | |
local.bibliographicCitation.startpage | 175 | |
local.bibliographicCitation.lastpage | 179 | |
dcterms.accessRights | Open Access | |
dc.provenance | https://v2.sherpa.ac.uk/id/publication/23848..."The Published Version can be archived in any website" from SHERPA/RoMEO site (as at 5/11/2020). | |
Collections | ANU Research Publications |
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