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Journal of Flow Visualization and Image Processing

Publicou 4 edições por ano

ISSN Imprimir: 1065-3090

ISSN On-line: 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

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UNUSUAL LASER-SHEET TOMOGRAPHY COUPLED WITH BACKLIGHT IMAGING CONFIGURATIONS TO STUDY THE DIESEL JET STRUCTURE AT THE NOZZLE OUTLET FOR HIGH INJECTION PRESSURES

Volume 9, Edição 1, 2002, 19 pages
DOI: 10.1615/JFlowVisImageProc.v9.i1.40
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RESUMO

One of the main goals of the car manufacturer is to build less polluting Diesel engines. In order to control the combustion it is essential to understand the atomization process. It is well known that the behavior of the liquid jet at the nozzle outlet acts directly on the atomization. For high injection pressures, the density of the jet at the injector exit makes it very difficult to study. Among the several technical approaches often used to visualize this dense region of the jet, the most convincing one seems to be laser-light sheet tomography. In this paper, the tomography is used together with short duration non-coherent backlighting. The focal plane displacement effect on the imaging and the modification of the laserlight sheet orientation are the main originalities of this work. These optical configurations have been applied to a 200-mm hole diameter nozzle for injection pressure up to 80 MPa. The changes in the jet structure with different injection pressures and at different injection times are reported. External and internal structures of the jet are pointed out. The visualizations, linked to a ray-tracing simulation, allowed us to design a new model for the Diesel jet structure.

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