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Journal of Flow Visualization and Image Processing
Главный редактор: Krishnamurthy Muralidhar (open in a new tab)

Выходит 4 номеров в год

ISSN Печать: 1065-3090

ISSN Онлайн: 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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CFD SIMULATION OF A GAS MASK FILTER IN THREE REALISTIC BREATHING PATTERNS

Том 16, Выпуск 3, 2009, pp. 201-219
DOI: 10.1615/JFlowVisImageProc.v16.i3.10
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Краткое описание

This research adopts CFD tools to investigate the influence of inspiratory resistance and extra work of breathing towards the users under three realistic breathing patterns (resting, light activity, and moderate exercise). The calculation model adopts the transient Navier−Stokes equation with the low Reynolds number k−ε turbulent model to find the solution. Besides, the momentum loss of porous flow calculated by the porous media equation is added in the source term of the momentum equation to present a larger pressure drop in porous media domain. The simulation results reveal that the maximum inspiratory resistance for Model A1 under moderate exercise is 2.35 times of light activity and 4.94 times of resting condition. In addition, the maximum of extra breathing work for moderate exercise is 4.83 times of light activity and 19.89 times of resting condition. Under realistic breathing patterns, the changes of the exercise strength in human will lead to the proportional changes in inspiratory resistance and extra work of breathing when wearing the gas mask. Subsequently, the characteristics of the respiratory physiology will be altered and the cardio-pulmonary load of the users will be increased.

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