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雾化与喷雾

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ISSN 打印: 1044-5110

ISSN 在线: 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

EFFECTS OF FLOW NONUNIFORMITY AND RELATIVE ACCELERATION ON DROPLET DYNAMICS

卷 6, 册 1, 1996, pp. 51-76
DOI: 10.1615/AtomizSpr.v6.i1.30
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摘要

A computational study on the dynamics of single droplets is performed in two gas flows at moderately high Reynolds numbers. One is Poiseuille flow in which the gas is either nitrogen or helium and the other is a counterflow formed by two opposed streams of nitrogen. The focus of the study is to review the methodologies used for representing the effects of flow nonuniformity and relative acceleration on droplet motion at moderately high Reynolds numbers. The motion of the droplets is observed to be affected by flow nonuniformity and unsteadiness, characterized respectively by dimensionless parameters κ and Ac, and the effects due to nonuniformity and rate of change of relative velocity are separable. It is determined that acceleration and deceleration affect the drag and lift on droplets in dissimilar ways. The lift force caused by flow nonuniformity is in the same direction as к in Poiseuille flow, whereas it is in the opposite direction as κ in counterflow. It is noted that the radius of curvature of droplet trajectory affects lift force more strongly than drag force. Modified correlations for the drag and lift coefficients as functions of the Reynolds number and dimensionless parameters characterizing the flow nonuniformity and unsteadiness are proposed.

对本文的引用
  1. Coimbra C. F. M., Rangel R. H., Spherical Particle Motion in Harmonic Stokes Flows, AIAA Journal, 39, 9, 2001. Crossref

  2. Yang Shichun, Gao Yanfei, Cao Yaoguang, Gu Yue, Gong Zhuoran, Investigation on Deformation of an Evaporating Droplet in Convective Transcritical Environments, Advances in Mechanical Engineering, 6, 2014. Crossref

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