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International Journal of Fluid Mechanics Research

年間 6 号発行

ISSN 印刷: 2152-5102

ISSN オンライン: 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

Time-Resolved Diffraction Granulometer for Measurements in Transient Sprays

巻 24, 発行 4-6, 1997, pp. 851-860
DOI: 10.1615/InterJFluidMechRes.v24.i4-6.400
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要約

The study of sprays of droplets issuing from cars injectors requires fast diagnostics synchronized on very short jet appearance. Particle sizer must furthermore be able to measure very small drops in high pressure chambers with restricted access. An instrument with capability for measuring droplet size by Fraunhofer diffraction technique with high frequency acquisition was developed. The temporal variation of the size distribution within a single diesel injection may be now recorded. An inversion program involves a generalized Lorenz Mie theory, developed in the laboratory. With this program, the scattered light of a droplet in a gaussian laser beam can be calculated. The effect of illumination profile (i.e.: ratio of the laser beam diameter on drop size) on the scattered light distribution is evaluated; the smallest beam size for a higher spatial resolution with no bias on measurement may then be calculated.
By use of a standard Malvern detector, measurements of droplet size larger than one micrometer are performed in a pressurized chamber with thick windows. Under the present configuration a special lens with short focus length and large diameter is used. An example of application to a Diesel spray is showed.

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