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Journal of Flow Visualization and Image Processing

年間 4 号発行

ISSN 印刷: 1065-3090

ISSN オンライン: 1940-4336

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: 0.6 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: 0.6 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: 0.00013 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: 0.14 SJR: 0.201 SNIP: 0.313 CiteScore™:: 1.2 H-Index: 13

Indexed in

VISUALIZATION OF DROPLET ENTRAINMENT GENERATED FROM INTERACTIONS BETWEEN FALLING FILM FLOW AND LATERAL AIR FLOW

巻 23, 発行 3-4, 2016, pp. 193-213
DOI: 10.1615/JFlowVisImageProc.2017019245
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要約

In this study, liquid film breakup was visualized in a 1/20-scaled direct vessel injection system at an APR1400 nuclear power plant in Korea. A film flow with a finite width was formed by the impingement of a water jet directed to the inner surface of a downcomer. The film flow exhibited different wavy surfaces that triggered the breakup based on a sweeping gas flow in a hypothetical nuclear accident. It is difficult to observe droplets in the narrow gap of an annulus because complex two-phase phenomena of the droplets and film flow exist on the surface. In the present study, a shadowgraph method was employed with a hydrophobic coated window, a high-speed camera (2200 fps, 1280 × 800 pixels), and 2-kW halogen lamp to track the breakage of entrainments from the liquid film flow and the movement of liquid droplets. The shadowgraph method with the hydrophobic coating window made it possible to successfully distinguish between the moving droplets in the gas flow and stacked droplets on the surface. The results indicated the distribution of the droplet diameter, mean droplet diameter, mean droplet velocity, and the Weber number at each location on the test section. The adoption of the shadowgraph method with the superhydrophobic coating method allowed successful visualization of droplet entrainment in a narrow gap. This was rarely performed in previous studies. Additionally, meaningful results were obtained for research fields that utilize direct vessel injection systems.

によって引用された
  1. Kim Hansol, Chen Leisheng, Lee Jaeyoung, Characteristics of vertically falling liquid film affected by cross gas flow in a narrow flat channel, Nuclear Engineering and Design, 357, 2020. Crossref

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