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International Journal of Energetic Materials and Chemical Propulsion

Выходит 6 номеров в год

ISSN Печать: 2150-766X

ISSN Онлайн: 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

SIMULATION OF IGNITION AND COMBUSTION OF LOW-VULNERABILITY PROPELLANT FOR ARTILLERY

Том 14, Выпуск 6, 2015, pp. 479-498
DOI: 10.1615/IntJEnergeticMaterialsChemProp.2015011199
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Краткое описание

This paper deals with a novel approach to numerically simulate the ignition and combustion of a bed of grains consisting of low-vulnerability ammunitions (LoVA) propellants in a gun tube. The originality of the work relies on a dual approach, since the same combustion wave model is used both for ignition and stationary combustion near the surface of the propellant grains. The rate of decomposition for propellant grains is written in terms of a transient one-dimensional heat equation inside the solid with a heat source. This heat source is related to the flame structure developing at the burning propellant surface and allows sustaining the thermal decomposition process in a stationary combustion. This stationary combustion follows the Vieille's law and the attainment of ignition depends on the level of incoming heat flux. Another aspect of the modelling is related to the porous medium, which is taken into account since spherical grains are packed inside the gun combustion chamber. Fluid flow equations for the gas phase are written with a full compressible flow in 2D transient formulation and a multistep reaction source is considered in the energy equation. Finally, the propagation of the combustion front after ignition during the early stages of the internal ballistic cycle of the gun tube is considered in a simplified geometry. The results are compared to the experimental Vieille's law of the propellant, showing the relevance of the proposed approach for future multidimensional studies.

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