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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

Experimental Investigation of Flow Conditions Inside an Air-Assisted Internal-Mixing Nozzle and their Correlation with Spray Data

Volume 24, Edição 1-3, 1997, pp. 65-75
DOI: 10.1615/InterJFluidMechRes.v24.i1-3.70
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RESUMO

An optically accessible internal-mixing air-assisted atomizer has been developed and examined by measurements with a Phase Doppler Analyzer (PDA). The optical access allowed visualization of the flow conditions inside the nozzle by high speed photography. The influence of the outlet port length and several other geometry parameters were investigated within a load range of 10 ≤ Mair ≤ 60 kg/h and 4 ≤ Mair ≤ 18 kg/h. It was found that the dominant geometric parameter influencing atomization quality is the length of the outlet port L. For short outlet ports energy transfer from the air to the liquid phase is unsatisfactory. Higher values of L provide a longer residence time in the outlet port where relative velocities between air and the liquid phase are high. This leads to improved atomization until an annular film is formed on the wall surface by deposition of ligaments and large droplets. The film leaves the nozzle without being atomized sufficiently which leads to large droplets at the spray boundary. An optimum is reached for L/D = 2 when the entire cross-section of the exit of the outlet port is filled with the two-phase flow. The other geometrical parameters exert an important influence on the preconditioning of the liquid jet and must be considered for the optimization of nozzle design too.

CITADO POR
  1. Kufferath A., Wende B., Leuckel W., Influence of liquid flow conditions on spray characteristics of internal-mixing twin-fluid atomizers, International Journal of Heat and Fluid Flow, 20, 5, 1999. Crossref

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