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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

MATHEMATICAL MODELING OF OPERATION OF AN ACOUSTIC DAMPER WITH GAS IN ITS INTERNAL CAVITY

Volumen 4, Edición 1-6, 1997, pp. 774-782
DOI: 10.1615/IntJEnergeticMaterialsChemProp.v4.i1-6.720
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SINOPSIS

A mathematical model has been developed of operation of an acoustic damper, based on Helmholtz's resonator principles, when a gas comes into its internal cavity and flows out through passages. Such an acoustic damper rather effectively suppresses oscillations in the chemical propulsion. The purposeful arrangement of a supply of gas with given properties into the internal cavity of the acoustic damper enables considerable decrease in the dimensions of the damper, thus providing its efficient use to suppress low - frequency oscillation. A solid propellant grain, placed in the cavity of the acoustic damper, can be used as the gas mass source.
The operation of the acoustic damper has been analysed based on the model proposed. The experimentally-observed effect of a significant increase in the efficiency of operation of the acoustic damper with increase in the velocity of the steady - state flow through the damper passages has been shown to be related to increase in friction in the passages, and the threshold velocity of the steady - state flow, at which this effect appears, has been shown to be determined by equality of the velocities of the pulsation and steady- state flows. The use of a solid propellant as a gas mass source in the damper cavity results in more efficient operation of the damper.

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