Detonations in hydrogen-methane-air mixtures in semi confined flat channels

作者：Rudy Wojciech^*; Zbikowski Mateusz; Teodorczyk Andrzej

来源：Energy, 2016, 116: 1479-1483.

DOI：10.1016/j.energy.2016.06.001

• Detonation
• Hydrogen
• Hydrogen-methane mixtures
• Detonation cell size

The aim of this work was to determine the influence of methane addition on the critical layer thickness h* and its relation to detonation cell size (lambda) for stable detonation propagating in semi-confined, non-obstructed channel filled with uniform, stoichiometric hydrogen-methane-air mixtures. Three types of gaseous mixture composition were used: 0%, 5% and 10% of methane volume fraction in the mixture with hydrogen. The critical height h*, detonation cell size lambda and critical relation hlambda were defined for each investigated mixture showing that detonation in stoichiometric hydrogen-air mixture may propagate in semi-open channel only when the channel height is very close to, or exceeds, 3 cell sizes. Methane addition to the investigated combustible mixture increases the critical h*, however hlambda ratio increases as well to 3.1 and 3.4 for 5% and 10% methane fraction, respectively.

• 出版日期2016-12-1