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Fizika Goreniya i Vzryva, 2010, Volume 46, Issue 3, Pages 59–68 (Mi fgv1194)  
Modeling of laser-induced combustion of iron in oxygen during gas-laser cutting

G. V. Ermolaev, O. B. Kovalev

Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090, Russia
Abstract: A physical and mathematical model is proposed for cyclic combustion of iron in an oxygen stream during oxygen gas-laser cutting of sheet metal. The combustion front is driven by focused laser radiation and heterogeneous iron oxidation in oxygen. The burning rate is limited by the rate of oxygen supply from the gas phase to the metal surface, and the motion of the interface is determined by the local temperature mode. Three-dimensional numerical modeling revealed striated structures on the metal surface whose linear dimensions depended on velocity of the laser beam and oxygen flow parameters. The modeling results explain the mechanism of striation formation during oxygen gas-laser cutting of low-carbon steel and agree qualitatively with experimental data.
Keywords: laser cutting, oxygen, steel, cyclic combustion, roughness, modeling.
Received: 10.06.2009
English version:
Combustion, Explosion and Shock Waves, 2010, Volume 46, Issue 3, Pages 293–300
DOI: https://doi.org/10.1007/s10573-010-0041-5
Bibliographic databases:
Document Type: Article
UDC: 620.22; 546.21
Language: Russian
Citation: G. V. Ermolaev, O. B. Kovalev, “Modeling of laser-induced combustion of iron in oxygen during gas-laser cutting”, Fizika Goreniya i Vzryva, 46:3 (2010), 59–68; Combustion, Explosion and Shock Waves, 46:3 (2010), 293–300
Citation in format AMSBIB
\Bibitem{ErmKov10}
\by G.~V.~Ermolaev, O.~B.~Kovalev
\paper Modeling of laser-induced combustion of iron in oxygen during gas-laser cutting
\jour Fizika Goreniya i Vzryva
\yr 2010
\vol 46
\issue 3
\pages 59--68
\mathnet{http://mi.mathnet.ru/fgv1194}
\elib{https://elibrary.ru/item.asp?id=15056316}
\transl
\jour Combustion, Explosion and Shock Waves
\yr 2010
\vol 46
\issue 3
\pages 293--300
\crossref{https://doi.org/10.1007/s10573-010-0041-5}
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