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International Journal of Fluid Mechanics Research

Publicado 6 números por año

ISSN Imprimir: 2152-5102

ISSN En Línea: 2152-5110

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.1 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.0002 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.33 SJR: 0.256 SNIP: 0.49 CiteScore™:: 2.4 H-Index: 23

Indexed in

Passive Control of Circular Jet Spread-Rates with Axially Splined Nozzles

Volumen 26, Edición 1, 1999, pp. 36-48
DOI: 10.1615/InterJFluidMechRes.v26.i1.30
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SINOPSIS

Experimental measurements for the axial development of streamwise velocity and turbulence distributions in the near field of free circular jets issued from splined nozzles are presented. Results include the axial distribution of mean flow and turbulence related quantities of a free circular jet with different nozzle exit conditions. Hot-wire data reveal interesting characteristics on jet spread-rate, shear layer width, and momentum thickness. Observed jet-characteristics are explained on the basis of the velocity and turbulence profiles measured at the nozzle exit. Axial splines at the circumference of the jet nozzle enhance turbulence at the jet circumference boundary layer without significantly changing the nozzle core flow. The boundary layer at the splined jet nozzle exit, i.e., at the start of the free shear layer, increases in thickness due to an increase in turbulence mixing. The addition of splines reduces the jet spread-rate and the growth of shear layer width. It is also observed that splines cause turbulence suppression at downstream locations and this method can be used as a passive control of jets.

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