Detonation Limits and Velocity Deficits of CH4, C2H4, C2H6 and C3H8 with N2O in a Small Diameter Tube

Hageman, Mitchell D.; Hopper, David R.; Knadler, Michael

doi:10.2514/6.2019-3952

Cited by 2 publications

(2 citation statements)

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“…Detonation experiments on CH 4 –, C 2 H 4 –, C 2 H 6 –, and C 3 H 8 –N 2 O mixtures with equivalence ratios from 0.4 to 2.0 were conducted by Hageman et al, using a tube and a Schelkin spirale for detonation initiation. The authors measured detonation limits and velocities, which were found to be consistently 2%–8% lower than the calculated Chapman–Jouguet velocities.…”

Section: Forced Ignitions Of N2o–h2 and N2o–hydrocarbon Mixturesmentioning

confidence: 99%

“…189 The detonation velocity was correlated with acetylene concentration in lean and stoichiometric C 2 H 2 −N 2 O mixtures. Zhang et al 190 191 using a tube and a Schelkin spirale for detonation initiation. The authors measured detonation limits and velocities, which were found to be consistently 2%−8% lower than the calculated Chapman−Jouguet velocities.…”

Section: Iii32 Laminar Burningmentioning

confidence: 99%

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Nitrous Oxide: Oxidizer and Promoter of Hydrogen and Hydrocarbon Combustion

Razus

2022

Ind. Eng. Chem. Res.

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This Review examines the gas-phase oxidations of hydrogen and other fuels (ammonia, hydrazine, hydrocarbons) with nitrous oxide, running as self-ignitions, deflagrations, or detonations. Taking into account the main feature of nitrous oxide, i.e., its ability to decompose exothermally, this Review summarizes also the conditions determining an explosive evolution of N 2 O decomposition, and the characteristic parameters of this process, as self-ignition or after ignition by local energy sources. For fuel− nitrous oxide explosive combustion, this Review is focused on conditions where the explosive combustion takes place (flammability limits, minimum ignition energy) or it is quenched (quenching distance, Maximum Experimental Safe Gap) and on the characteristic properties of explosion development and propagation. These properties are separately examined for deflagrations and detonations. The DDT (Deflagration-to-Detonation) process is also taken into account, because it occurs in most technical applications of fuel−N 2 O combustion in enclosures. This Review is completed by a discussion of processes where nitrous oxide is promoter of fuel−oxygen or fuel−air explosive combustion.

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Section: Forced Ignitions Of N2o–h2 and N2o–hydrocarbon Mixturesmentioning

confidence: 99%