Structure of shock and detonation waves propagating in hybrid methane/hydrogen/air/coal dust mixtures

Structure of shock and detonation waves propagating in hybrid methane/hydrogen/air/coal dust mixtures Full article

Journal

Shock Waves
ISSN: 0938-1287

Output data

Year: 2023, Volume: 33, Number: 6, Pages: 473-482 Pages count : 10 DOI: 10.1007/s00193-023-01146-1

Tags

Methane · Hydrogen · Coal dust suspension · Air · Shock wave · Detonation · Initiation energy · Combustion · Multi-fuel mixtures

Authors

A. V. Pinaev ¹ , P. A. Pinaev ¹

Affiliations

1	Lavrent’ev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia

A study of shock and detonation waves propagating in gaseous two-fuel CH4/H2/air mixtures and heterogeneous three-fuel CH4/H2/air/coal mixtures with the mean bulk density of the coal dust suspension equal to 95−560 g/m3 and with a particle size of 0−200 μm is performed. The experiments are conducted in a vertical shock tube with a length of 6.75 m and a diameter of 70 mm. The detonation parameters measured in the experiments are compared with the calculated equilibrium thermodynamic values. It is found that the detonation wave parameters are mainly affected by methane and hydrogen rather than by the coal dust suspension. Decaying shock waves are as dangerous as detonation waves because blast wave reflections can initiate detonation. An increase in the hydrogen fraction in the mixture decreases the energy of initiation of CH4/H2/air and CH4/H2/air/coal mixtures, resulting in a greater hazard for the generation of shock and detonation waves in these mixtures

A. V. Pinaev , P. A. Pinaev
Structure of shock and detonation waves propagating in hybrid methane/hydrogen/air/coal dust mixtures
Shock Waves. 2023. V.33. N6. P.473-482. DOI: 10.1007/s00193-023-01146-1 WOS Scopus РИНЦ OpenAlex

Submitted:	Apr 29, 2022
Accepted:	Aug 14, 2023

Web of science:	WOS:001088102800001
Scopus:	2-s2.0-85174586282
Elibrary:	65367193
OpenAlex:	W4387906475

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