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Interfacial Phenomena and Heat Transfer

Publicou 4 edições por ano

ISSN Imprimir: 2169-2785

ISSN On-line: 2167-857X

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: 0.5 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: 0.8 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: 0.2 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: 0.00018 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: 0.11 SJR: 0.286 SNIP: 1.032 CiteScore™:: 1.6 H-Index: 10

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EFFECT OF GAS PRESSURE AND TEMPERATURE ON THE REGIMES OF LIQUID DROPLET COLLISIONS

Volume 10, Edição 1, 2022, pp. 25-46
DOI: 10.1615/InterfacPhenomHeatTransfer.2022044027
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RESUMO

The paper presents experimental research findings for the critical conditions and integral characteristics of secondary atomization of liquid droplets when varying the gas medium pressure (0.9−5 atm) and temperature (20−200°C). The experiments were conducted with water droplets with initial temperatures of 20 and 80°C to investigate the contribution of heating the liquid and its evaporation to the interaction conditions and characteristics. We varied the impact angles, sizes, and velocities of droplets in a gas medium. Typical collision regimes were identified: bounce, coalescence, separation, and disruption. Liquid droplet collision regime maps using the dimensionless linear parameter of interaction and Weber number were produced. Specific aspects of droplet collisions were established at different pressures and temperatures of the gas medium. The ratios of liquid surface areas before and after droplet disruption were calculated. The findings were compared to known data of other authors. Conditions were shown under which the gas pressure and temperature significantly affect droplet collision regimes and transition boundaries between them, as well as droplet collision outcomes.

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