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Atomization and Sprays

Publicado 12 números por año

ISSN Imprimir: 1044-5110

ISSN En Línea: 1936-2684

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: 1.2 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: 1.8 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.3 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: 0.00095 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: 0.28 SJR: 0.341 SNIP: 0.536 CiteScore™:: 1.9 H-Index: 57

Indexed in

INFLUENCE OF TWO-PHASE FEED BUBBLE SIZE ON EFFERVESCENT ATOMIZATION IN A HORIZONTAL NOZZLE ASSEMBLY

Volumen 21, Edición 3, 2011, pp. 249-261
DOI: 10.1615/AtomizSpr.2011003241
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SINOPSIS

An experimental study is presented of a spray atomizer used in heavy oil upgrading. Bubble size in the feed flow was observed to determine its influence on the atomization of an effervescent nozzle. Experiments were conducted with water and air in a two-phase flow, commercial-scale facility at ambient conditions (horizontal air/water bubbly feed in a 25.4 mm tube to a single contraction throat diameter of 12.7 mm). Different mixtures were tested with water flow rates from 113 to 200 kg/min and 1 to 4 kg/min for air flow rate, achieving an air liquid ratio, γ, from 1% to 4%. The range of feed parameters would result in flow regimes that were either bubbly or intermittent in equilibrium horizontal flow. Two bubble breakers (perforated plates) were used to modify the size of the bubbles in the conduit feeding the nozzle. Bubbles and droplets were measured with visualization techniques using front lighting for bubbles and shadowgraphy for droplets. A single location in the spray cone was chosen as the characteristic location in the flow where droplet size and distribution are most representative of the mass flow of the spray liquid. Acquired images were used to estimate the size and shape and calculate Sauter mean diameter. The experiments indicate that the influence of the scale of bubbles in the feed on the reduction of droplet size resulted in the atomization and support the need for attention in designing the feed delivery premixing and transport to the nozzle.

CITADO POR
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