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国际流体力学研究期刊

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ISSN 打印: 2152-5102

ISSN 在线: 2152-5110

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: 1.1 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: 1.3 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: 0.0002 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: 0.33 SJR: 0.256 SNIP: 0.49 CiteScore™:: 2.4 H-Index: 23

Indexed in

Parametric Study of a Supersonic Unsteady Flow in a Nozzle for a Potential Lead Azide Laser

卷 26, 册 2, 1999, pp. 146-168
DOI: 10.1615/InterJFluidMechRes.v26.i2.20
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摘要

A parametric numerical study is conducted for the flow in a converging-diverging nozzle suitable for a lead azide laser. The flow is generated by exploding a lead azide pellet at some standoff distance on the nozzle axis. It is shown that the nozzle presence significantly affects the explosion generated flow field. When the explosive products pass through the nozzle a very clear enhancement in the flow pressure, density and temperature is evident, in comparison with values obtained at the same locations in a similar free expansion flow (no nozzle). The enhancement in flow properties, especially in temperature, is desirable for melting all the small solid lead particles suspended in the explosion products gas flow. A suitable nozzle flow (i.e., a flow having a desirable pressure, density, temperature and velocity) can be obtained by the appropriate choice of the nozzle area ratio and its location (standoff distance) with respect to the explosion center. Changes in the pellet mass, its material density and/or the composition of the explosion products also affect the flow inside the nozzle as described in the text. The gasdynamics of the "nozzle-trapped" flow is performed by using a quasi-one-dimensional high-resolution scheme, including a special boundary condition at the nozzle inlet plane.

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