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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

Publicado 4 números por año

ISSN Imprimir: 1093-3611

ISSN En Línea: 1940-4360

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: 0.4 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: 0.00005 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: 0.07 SJR: 0.198 SNIP: 0.48 CiteScore™:: 1.1 H-Index: 20

Indexed in

MODELLING OF THE HEAT TRANSFER OF ATOMIC OXYGEN RECOMBINATION ON CERAMICS AND SEMICONDUCTORS TARGETS

Volumen 9, Edición 3, 2005, pp. 363-373
DOI: 10.1615/HighTempMatProc.v9.i3.40
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SINOPSIS

The goal of this work is to study the heat and mass transfer phenomena at the solid/gas interface for thermal protection system of space vehicles. Catalycity qualified the heat flux due to the oxygen atoms recombination («gamma» coefficient) and their energy accommodation («beta» coefficient) on the surface of the material. So, we propose an approach to modelling and to simulate the recombination of oxygen atoms and the energy transfer to a metallic surface at stagnation point configuration by using a computational fluid dynamics code. The flow is described by a system of conservation (momentum, mass and energy) equations. The necessary boundary conditions were provided by a model for a reactive flow-surface interaction. We have obtained the field velocity, temperature and the fluxes of atomic and molecular oxygen in the reactor under similar conditions to experiments. Assuming surface recombination of oxygen atoms only, the "gamma" coefficient was calculated from the ratios of atomic and molecular fluxes to the surface. The simulation was made on ceramics and semiconductors materials. The comparison between calculated values of "gamma" and experimental ones leads to the determination of the surface recombination rate constants.

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