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International Journal of Energetic Materials and Chemical Propulsion

Publicado 6 números por año

ISSN Imprimir: 2150-766X

ISSN En Línea: 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

A COMPUTATIONAL STUDY OF A DUAL-MODE RAMJET COMBUSTOR WITH A CAVITY FLAMEHOLDER

Volumen 11, Edición 6, 2012, pp. 487-510
DOI: 10.1615/IntJEnergeticMaterialsChemProp.2013005758
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SINOPSIS

In this study we use Reynolds-averaged Navier−Stokes (RANS) and large-eddy simulation (LES) combustion models to analyze the flow, fuel injection, mixing, self-ignition, and combustion in a dual-mode ramjet combustor with a cavity flameholder. Comparison with experimental data is used to evaluate the predictive capabilities of the models and to provide additional information about the combustion physics in the dual-mode ramjet combustor. Both the experimental data and the LES results predict two distinct behaviors depending on the value of the stagnation temperature, T0; for To < 1150 K, the flame anchors in the shear layer shedding off the leading edge of the cavity (cavity-stabilized combustion), whereas for T0 > 1350 K the flame anchors just downstream of fuel injection in the jet wake due to heat release at the lower combustor wall (jet-wake-stabilized combustion). For intermediate values, 1150 < T0 < 1350, the flame oscillates between cavity-stabilized and jet-wake-stabilized combustion. The oscillating mode is more difficult to compute simply because the oscillations have a frequency between 20 and 95 Hz, hence requiring long simulation times. Unfortunately, the RANS computations are not successful in capturing the different modes of operation. This deficiency is believed to be caused by the failure to capture the interactions between the flow and the chemical kinetics.

CITADO POR
  1. Gibbons Nicholas N., Gehre Rolf, Brieschenk Stefan, Wheatley Vincent, Simulation of Laser-Induced-Plasma Ignition in a Hypersonic Crossflow, 20th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2015. Crossref

  2. Chan Wai Lee, Ihme Matthias, Analysis of Combustion Closure Assumptions in a Dual-Mode Scramjet Combustor, 54th AIAA Aerospace Sciences Meeting, 2016. Crossref

  3. Gibbons Nicholas, Gehre Rolf, Brieschenk Stefan, Wheatley Vincent, Simulation of Laser-Induced Plasma Ignition in a Hypersonic Crossflow, AIAA Journal, 56, 8, 2018. Crossref

  4. Fureby Christer, LES for Supersonic Combustion, 18th AIAA/3AF International Space Planes and Hypersonic Systems and Technologies Conference, 2012. Crossref

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