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International Journal of Energetic Materials and Chemical Propulsion

年間 6 号発行

ISSN 印刷: 2150-766X

ISSN オンライン: 2150-7678

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: 0.7 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: 0.7 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: 0.1 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: 0.00016 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: 0.18 SJR: 0.313 SNIP: 0.6 CiteScore™:: 1.6 H-Index: 16

Indexed in

ANALYSIS OF BORON PARTICLE IGNITION ABOVE A BURNING SOLID FUEL IN A HIGH-VELOCITY ENVIRONMENT

巻 2, 発行 1-6, 1993, pp. 303-331
DOI: 10.1615/IntJEnergeticMaterialsChemProp.v2.i1-6.170
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要約

The ignition processes of boron particles above a burning solid fuel have been studied by numerical solution of a comprehensive theoretical model. The gas-phase formulation is based on the time-dependent multi-dimensional compressible Navier-Stokes equations and species transport equations. The particle-phase solution is obtained using a well-established boron particle ignition model. Boron particles are ejected from the surface of the burning fuel into a high-velocity crossflow and their trajectories are traced through the reacting flowfield using a Stochastic Separated Flow approach. The effects of particle size on their ignition time and location are determined. Results indicate that small particles (d < 3 μm) ignite as soon as they pass through the gas-phase reaction zone and come in contact with oxygen. Larger particles ignite further downstream, since they require more energy to remove their oxide layers and achieve thermal runaway. The effects of ambient conditions on the ignition times are also investigated. The study shows that minimization of ignition time can be accomplished by optimizing the environmental conditions during the ignition process.

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