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Fizika Goreniya i Vzryva, 2016, Volume 52, Issue 2, Pages 54–59
DOI: https://doi.org/10.15372/FGV20160206
(Mi fgv305)
 

This article is cited in 4 scientific papers (total in 4 papers)

Effect of heat transfer conditions on the critical pressure of metal ignition in oxygen

V. I. Bolobov

St. Petersburg Mining University, St. Petersburg, 199106, Russia
Full-text PDF (206 kB) Citations (4)
Abstract: Experimental data on the critical pressure of ignition of titanium alloy fragments in gaseous oxygen are analyzed. The fragments are obtained after fracture of alloy samples in the dynamic mode $(p_2^*)$ and under natural convection conditions $(p_1^*)$. The results are analyzed with allowance for the heat transfer coefficients from material ignition initiators under similar conditions. Based on the shape of the experimental thermograms of plate cooling, the coefficient of heat transfer from microcraters with a juvenile surface formed due to knockout of metal particles from the plate by the high-velocity flow is found: $\alpha_2\approx11$ W(m$^2$ $\cdot$ K). The value of $\alpha_2$ is close to the value of this coefficient calculated with the use of the coefficient $\alpha_1\approx5$ kW/(m$^2$ $\cdot$ K) of heat transfer from titanium rod microfragments (with the size of the order of metal grains) formed during titanium rod fracture in oxygen under conditions of natural convection with allowance for the ratio $(p_2^*)/(p_1^*)$.
Keywords: critical pressure of ignition, oxygen, ignition initiators, fracture fragments, titanium alloys, heat transfer coefficien.
Received: 28.01.2015
English version:
Combustion, Explosion and Shock Waves, 2016, Volume 52, Issue 2, Pages 172–176
DOI: https://doi.org/10.1134/S0010508216020064
Bibliographic databases:
Document Type: Article
UDC: 620.193:669.295:669.243
Language: Russian
Citation: V. I. Bolobov, “Effect of heat transfer conditions on the critical pressure of metal ignition in oxygen”, Fizika Goreniya i Vzryva, 52:2 (2016), 54–59; Combustion, Explosion and Shock Waves, 52:2 (2016), 172–176
Citation in format AMSBIB
\Bibitem{Bol16}
\by V.~I.~Bolobov
\paper Effect of heat transfer conditions on the critical pressure of metal ignition in oxygen
\jour Fizika Goreniya i Vzryva
\yr 2016
\vol 52
\issue 2
\pages 54--59
\mathnet{http://mi.mathnet.ru/fgv305}
\crossref{https://doi.org/10.15372/FGV20160206}
\elib{https://elibrary.ru/item.asp?id=25953239}
\transl
\jour Combustion, Explosion and Shock Waves
\yr 2016
\vol 52
\issue 2
\pages 172--176
\crossref{https://doi.org/10.1134/S0010508216020064}
Linking options:
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  • https://www.mathnet.ru/eng/fgv/v52/i2/p54
  • This publication is cited in the following 4 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
    Fizika Goreniya i Vzryva Fizika Goreniya i Vzryva
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