Flame Propagation in CH4/Air and CH4/Air/Coal Dust Mixtures in a Closed Vertical Channel

Flame Propagation in CH4/Air and CH4/Air/Coal Dust Mixtures in a Closed Vertical Channel Full article

Journal

Combustion, Explosion and Shock Waves
ISSN: 0010-5082

Output data

Year: 2025, Volume: 61, Number: 2, Pages: 179-187 Pages count : 9 DOI: 10.1134/s0010508225700029

Tags

vertical channel, combustion wave, methane, coal dust, heterogeneous dual-fuel mixture, lower flammability limit of flame propagation, fire safety

Authors

Pinaev A.V. ¹ , Pinaev P.A. ¹

Affiliations

1	Lavrentyev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia

We investigated the possibility of the existence of combustion waves in CH /air mixtures with a methane content vol % and in CH /air/coal dust mixtures in a closed vertical channel 6.75 m long and 0.07 m in diameter when ignited at the top. The experiments were carried out at an initial pressure of 0.1 MPa using dust with an average volume concentration of 100–530 g/m3 and a particle size 0–200 μm. It was found that combustion was not initiated in gas and gas/coal dust mixtures with vol %. The results of the study indicate that the direction of gravity influences the ignition and combustion of the mixtures and that the energy contribution of coal particles is low compared to that of methane.

Pinaev A.V. , Pinaev P.A.
Flame Propagation in CH4/Air and CH4/Air/Coal Dust Mixtures in a Closed Vertical Channel
Combustion, Explosion and Shock Waves. 2025. V.61. N2. P.179-187. DOI: 10.1134/s0010508225700029 WOS Scopus OpenAlex

Пинаев А.В. , Пинаев П.А.
Исследование распространения пламени в смесях CH4/воздух, CH4/воздух/уголь в закрытом вертикальном канале
Физика горения и взрыва. 2025. Т.61. №2. С.10-17. DOI: 10.15372/FGV2024.9468.

Submitted:	Apr 2, 2024
Accepted:	Oct 16, 2024
Published print:	Nov 21, 2025

Web of science:	WOS:001619585500002
Scopus:	2-s2.0-105022603109
OpenAlex:	W4416437741

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