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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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VISUALIZATION OF FLOW BY BLAST WAVES PRODUCED BY PULSED DISCHARGE

Volume 23, Edição 1-2, 2016, pp. 15-24
DOI: 10.1615/JFlowVisImageProc.2016016980
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RESUMO

An experimental investigation of combined discharge (pulse volume discharge with preionization by plasma electrodes) was carried out: glow time and space characteristics, analysis of flow with discharge-produced blast waves. The contracted volume discharge (spatial gas discharge mode in contracted form) was considered as electrical breakdown − a 24-mm-long vertical plasma column was formed. As a result of the nanosecond-lasting breakdown, the internal energy of the gas increased and the pressure raised up, which led to the formation of gas flow with cylindrical shock (blast) waves. The flow evolution was visualized with the aid of high-speed shadowgraphy. The blast waves were recorded, their position and speed were measured; the instability of the post-discharge hot gas channel was also visualized. A two-dimensional numerical simulation of flow based on the Euler equations was performed. The model of pulse cylindrical energy deposition was used; initial conditions were taken from experimental data. An inverse problem was solved by comparing CFD with the position of experimental shock waves. It was shown that 20−22% of the combined discharge energy, stored in the capacitor, was converted into the internal gas energy (about 140-155 mJ). Shock waves from surface discharges were also visualized and analyzed.

CITADO POR
  1. Koroteeva E., Znamenskaya I., Doroshchenko I., Experimental and numerical investigation of a flow induced by a pulsed plasma column, Physics of Fluids, 30, 8, 2018. Crossref

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