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International Journal of Fluid Mechanics Research

Publicou 6 edições por ano

ISSN Imprimir: 2152-5102

ISSN On-line: 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

INFLUENCE OF NOZZLE EXIT CONDITIONS ON THE NEAR-FIELD MEAN FLOW CHARACTERISTICS OF LOW-ASPECT-RATIO RECTANGULAR JETS

Volume 44, Edição 4, 2017, pp. 297-319
DOI: 10.1615/InterJFluidMechRes.2017018780
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RESUMO

The present study reports a systematic investigation of the effect of aspect ratio and Reynolds number on the mixing characteristics of low-aspect-ratio rectangular jets issuing from orifice plate nozzles. The nozzle aspect ratio (AR) is varied from 2 to 7, while the Reynolds number (with a constant equivalent diameter) is varied from 1 × 104 to 5 × 104. Particle image velocimetry (PIV) is used to determine the jet centerline mean velocity decay, jet velocity half-width spread, and potential core length, which are used to characterize the mechanisms of jet spreading in the near (x/De < 4) and mid (4 < x/De < 10) fields. The results show a distinctive difference in the mixing characteristics in the very near field (x/De < 2) for the low-AR range (AR = 2−7) examined in the present study. Jet entrainment is found to decrease in the near field with increasing AR for AR < 5. For AR > 4, however, the trend is reversed, that is, jet entrainment increases with increasing AR. Additionally, the results show that, in the midfield, the magnitude of jet decay and spreading rates increases with increasing AR and remains relatively constant with varying Reynolds number. In conclusion, Reynolds number is found to have a lesser impact than the AR on the mixing characteristics of a rectangular jet, suggesting a stronger aspect ratio dependence for low-aspect-ratio rectangular jets.

CITADO POR
  1. Kim Won Hyun, Park Tae Seon, Influence of inlet vorticity and aspect ratio on axis-switching and mixing characteristics of heated rectangular jets, International Journal of Heat and Mass Transfer, 155, 2020. Crossref

  2. Kim Won Hyun, Park Tae Seon, Inflow characteristics for generating axis-switching phenomenon of heated rectangular jets, Computers & Mathematics with Applications, 86, 2021. Crossref

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