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

Erscheint 4 Ausgaben pro Jahr

ISSN Druckformat: 1093-3611

ISSN Online: 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

DISPERSED PHASE VELOCITY IN A HIGH-TEMPERATURE GAS FLOW

Volumen 23, Ausgabe 4, 2019, pp. 319-328
DOI: 10.1615/HighTempMatProc.2019030506
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ABSTRAKT

At the present stage of space research, one of the most important tasks is the experimental study of heat-shielding materials of a descent spacecraft in conditions of strong dustiness of the atmosphere. To study the physicochemical processes occurring on the surface of a heat-shielding material, when modeling the entry of a spacecraft into the planet's atmosphere, it is necessary to create hypersonic high-enthalpy heterogeneous flows with constant monitoring of gas-dynamic parameters. The aim of this work was to obtain the maximum possible velocity of the heterogeneous phase at the Luch-22 setup, which is based on the electric-arc gas heater of a linear scheme with magnetogas-dynamic stabilization of the jet. A numerical simulation was carried out to determine the output nozzle geometry and the position for injection the dispersed phase into the main flow. As a dispersed phase, SiO2 particles with a determining diameter of 14.2 μm were used. A high-speed CCD camera with image intensifier with flash synchronization of a two-pulse Nd:YAG laser with Q-switching was used to record the velocity of particles in the plasma torch stream. Experimental results showed that with the selected geometry of the nozzle block and the position of the injection channel of particles, the velocity of the dispersed phase in the flow reaches 2200-2300 m/s. It is shown that when designing a nozzle unit, it is necessary to take into account the size and material of the particles of the dispersed phase.

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